I-95 Corridor Congestion Relief Study

Transcription

Technical Memorandum
I-95 Corridor Congestion
Relief Study
Data Collection/
Existing Conditions
Connecticut
Department of
Transportation
February 26, 2014
Technical Memorandum
Data Collection/Existing Conditions
At the direction of the Connecticut Department of Transportation (CT DOT), CDM Smith is leading a
congestion relief study in the Southwest region. The study is funded through a grant from the FHWA
Value Pricing Pilot (VPP) program. The grant application submitted by the CT DOT specifically
outlined the I-95 Corridor from the New York State border line to New Haven due to severity and
duration of congestion experienced by motorists along Connecticut’s most heavily congested corridor
and the need for a multi-modal solution to provide much needed congestion relief and additional trip
making options. Congestion levels have been on the rise in the Bridgeport, Stamford and New Haven
metro areas for decades. In fact, traffic has reached such high densities during the peak periods that
the effective capacity of the roadway is literally being reduced due to 20 miles of back-up conditions
that exist on I-95. This increased time spent sitting in traffic results in significant impacts to people’s
heath, quality of life, time, and money and has put tremendous strain on economic development and
business activity.
To support the technical analysis for this congestion relief study, CDM Smith constructed a data
collection plan including new traffic counts, roadway travel speed data, information on travel
patterns, vehicle occupancy levels, and out of state traffic percentages. This memo discusses the I-95
study area, data collection efforts, and presents summaries of the data collection analysis which will
be used to support the study.
Project Area Description
The general area for this study can be defined as the I-95 corridor from New York State border to the
I-91/I-95/ Rt-34 interchange in New Haven, Connecticut. Figure 1 depicts the general study area,
with the highlighting of I-95 and the Merritt Parkway / Wilbur Cross Parkway. Route 1 and the Metro
North rail line run parallel to I-95, crossing over I-95 at multiple locations throughout the corridor.
Because of the interaction and competition between I-95, Merritt Parkway / Wilbur Cross Parkway/
Route 15, Route 1, and the Metro North line, CDM Smith has collected data across all potential modes
of transportation within the defined study area.
Figures 2 through 5 show I-95 through major metropolitan areas: Milford, Bridgeport, Norwalk, and
Stamford. All these metropolitan areas provide a major arterial, freeway, or a parkway that directly
links I-95 with the Merritt Parkway/ Wilbur Cross Parkway. The I-95 and Route 15 corridors are
linked through the Milford Parkway in Milford, Route 8/Route 25 in Bridgeport, US 7 in Norwalk, and
combination of Route 137 and Route 104 through Stamford.
Figures 6 through 12 depict I-95 schematically from the I-287 interchange in Port Chester, New York
State to just north of the I-91/I-95/ Rt-34 interchange in New Haven, Connecticut. Interchange
numbers, mileposts, the number of lanes, and posted speed limits are displayed. In general, I-95 has
three general purpose lanes in each direction, with sections containing additional auxiliary lanes or in
some instances addition general purpose lanes. The posted speeds along I-95 vary through the study
corridor between 45 and 55 mph due to construction zones in New Haven, Stratford and Norwalk.
1
February 26, 2014
Danbury
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N
25
7
91
New Haven
25
New York
Bridgeport
95
Milford
15
7
1
8
95
1
Norwalk
15
Stamford
1
95
Long Island Sound
I-95 AND ROUTE 15 STUDY CORRIDORS
FIGURE 1
r
Wheele
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ms
Far
N
n
Da
iel
121
so
Rd.
as
W
S.
nC
c
ne
on
1
r
to
95
Milford
ry
er
Ch
.
St
h
Hig
St.
Plains
Rd.
¤
n
1
95
Bic
.
Dr
162
Sch
ool
h
ous
eR
d.
Milford
Harbor
Gulf
Pond
736
¤
n
LEGEND
Rail Station
I-95 MILFORD
FIGURE 2
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N
Broo
Barnum Ave.
n Av
klaw
e.
127
8
1
r
Pa
.
ve
kA
¤
n
130
ne
Con
ve.
tA
u
c
i
ct
d
tfor
Stra
130
.
Ave
95
.
e St
Stat
Railroad Av
95
e.
Bridgeport
Fa
irf
iel
dA
ve
.
130
¤
n
LEGEND
Rail Station
Long Island Sound
I-95 BRIDGEPORT
FIGURE 3
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N
1
ve
N. Taylor A
.
Wes
t
Ave
.
East Ave.
7
Ri
v er
Norwalk
95
wa
Nor
136
lk
1
Fla
x
Water St.
Hi
ll R
d.
¤
n
Norwalk
Harbor
¤
n
LEGEND
Rail Station
I-95 NORWALK
FIGURE 4
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ok R
d
nbr
o
Stillw
ate
e.
r Rd .
106
Gle
d.
Av
Strawberry Hill
rR
.
ve
sto
We
137
Palmer Hill Rd
.
1
Stamford
95
1
Seaside Ave.
Co
nn
e
ctic
ut
Ave
.
W. Broad St
.
Holly
Pond
Cove Rd.
¤
n
Sellec k
St.
N
¤
n
LEGEND
Rail Station
I-95 STAMFORD
FIGURE 5
2
2
MP 0.78
MP 2.54
MP 3.73
Delavan Ave.
Exit 2
Arch St.
Exit 3
Indian Field Rd.
Exit 4
Byram Rd.
Greenwich
1
Connecticut
1
Port Chester
287
New York
Midland Ave.
Exit 21
To
Tappan Zee
Bridge
Field Point Rd.
Frontage
Rd.
1
3
1
1
3
1
1
1
3
3
3
3
3
3
3
1
3
95
2
3
3 1
1
3
3
1
1
1
Match Line A
CT 96725 / 2-26-14 / I-95 Schematic 11x17.pptx
1
Ritch Ave.
MP 0.78
Byram Shore Rd.
Exit 2
Greenwich
E. Putnam Ave.
Exit 5
East Putnam Ave.
Stamford
MP 5.53
MP 6.62
MP 7.30
West Ave.
Exit 6
Greenwich Ave.
Exit 7
Washington MP 7.67
Blvd.
Atlantic St.
Exit 8
Grenhart Rd.
Match Line A
1
1
3
N. State St.
1
1
1
3
3
3
Canal St.
1
3
1
3
95
3
3
1
3
3
1
1
Baxter Ave.
1
3
3
1
McCullough
St.
1
3
1
3
Match Line B
Midland Ave.
Exit 22
LEGEND
0 Number of General Purpose Lanes
+0 Number of Auxiliary Lanes
S. State St.
MP 6.50
Harvard Ave.
Exit 6
NUMBER OF LANES AND POSTED SPEED LIMITS - I-95
FIGURE 6
MP 9.28
MP 10.75
Stamford
Courtland Ave.
Ledge Rd.
Exit 10
1
1
1
Match Line B
Turnpike Service Rd.
(Official Use Only)
3+1
3
1
4+1
4
Service Area
4
1
1
1
3
4
4
3+1
95
3
3
1
3
3
3
1
1 1
S. State St.
3
3
1
3
Match Line C
E. Main St.
Exit 9
Noroton Ave.
Exit 10
Darien
Elm St.
Exit 8
1
(Official Use Only)
Brookside Dr.
MP 9.28
Seaside Ave.
Exit 9
MP 12.23
MP 13.14
Boston Post Rd.
Exit 13
Match Line C
Ledge Rd.
1
1
1
3+1
3
1
3
1
1
3
3
3+1
1
Boston Post Rd.
Exit 14
1
3
3+1
95
1
MP 14.83
3
3
3
3
1
Boston Post Rd.
Exit 13
Old Kings Hwy.
3
1
1
Connecticut
Welcome
Center
1
3
3
Match Line D
Boston Post Rd.
Norwalk
Tokeneke Rd.
Exit 12
Boston Post Rd.
Exit 11
Darien
MP 11.61
LEGEND
1
Scribner Ave.
Fairfield Ave.
Exit 14
FIGURE 7
MP 15.49
West
Exit 15 Ave.
MP 20.36
MP 18.13
1
Match Line D
3+1
1
1
1
3
3
1
1
3
3
3
1
1
1
3
3
3
Match Line E
Norwalk
1
Westport
Riverside Ave.
Exit 17
Fairfield
MP 16.24
East Ave.
Exit 16
Westport
Sherwood Island
Connector
Exit 18
95
3
3
3+1
3
1
1
1
3
1
3
1
3
3
3
1
1
1
Norwalk River
MP 23.12
MP 23.72
Boston Post Rd.
Exit 19
Bronson Rd.
Exit 20
Pease Ave.
Kings Hwy W.
Jelliff Ln.
1
Match Line E
3
3
3
3
95
3
3
3
1
3
Match Line F
1
1
LEGEND
1
1
Rennell Dr.
MP 22.88
Center St.
Exit 19
Old Post Rd.
Post Rd.
FIGURE 8
MP 25.21
MP 24.38
North Benson Rd.
Exit 22
Round Hill Rd.
Meadowbrook Rd.
1
1
1
1
Match Line F
1
1
1
1
3+1
3
Service Area
MP 25.83
King’s Hwy.
Exit 23
3
3
3
3
3
3
3
Match Line G
Mill Plain Rd.
Exit 21
95
3+1
3
3
1
Service Area
1
1
3
3
1
1
1
1
MP 25.83
King’s Hwy.
Exit 23
1
MP 25.03
Round Hill Rd.
Exit 22
Crestwood Rd.
MP 27.64
MP 26.72
Coolidge St.
Dewey St.
Stephens Ln.
1
Match Line G
1
1
1
3
3
Fairfield Ave.
Exit 25
3
3
3+1
95
3
3
1
3
3
1
1
3+1
Match Line H
Fairfield
Kings Hwy. E.
Bridgeport
Black Rock Tpke.
Exit 24
LEGEND
1
Johnson Dr.
MP 26.72
Black Rock Tpke.
Exit 24
Chambers St.
MP 27.43
Pine St.
Commerce Dr.
Exit 25
FIGURE 9
MP 29.03
Exit 27A
MP 29.14
MP 28.29
Park Ave.
1
East Main St.
Exit 28
1
Stratford Ave.
North Frontage Rd.
Match Line H
1
1
3+1
1
3+1
3+2
MP 30.07
Seaview Ave.
Exit 29
Stratford Ave.
Exit 29
Cedar
St.
1
MP 30.07
Connecticut
Ave.
1
1
1
3+1
3
3+1
2+2
3+1
3
3
95
3+1
3+1
1
3
2+2
3+1
1
3
3
1
1
1
Match Line I
Wordin Ave.
Exit 26
MP 29.86
Lafayette Blvd.
Exit 27
Mytle
Ave.
Ann St.
Exit 28
South
Frontage Rd.
1
Seaview Ave.
Exit 29
Pequonnock River
MP 29.00
Lafayette Blvd.
Exit 27
Spada Blvd.
3
1
1
3
3
3
1
3
3
95
3
3
1
3
3
1
3
3
1
1
1
Mt. Carmel Blvd.
3
Match Line J
1
1
3
MP 32.86
West Broad St.
Exit 32
Linden
Ave.
1
Match Line I
MP 32.29
South Ave.
Exit 31
Stratford
Bridgeport
Hollister Ave.
MP 31.30
Surf Ave.
Exit 30
LEGEND
1
MP 31.07
Lordship Blvd.
Exit 30
MP 32.11
Honeyspot Rd.
Exit 31
Beardsley Ave.
West Broad St.
Exit 32
FIGURE 10
MP 35.85
MP 36.69
1
1
1
1
Match Line J
3
3
3
1
1
3
3
3
3
3
3
1
3
3
95
3
3
1
3
1
1
1
1
3
1
3
Match Line K
Barnum Ave.
Plains Rd.
Exit 36
Milford
Stratford
Bic Dr.
Exit 35
1
MP 33.91
MP 35.37
Ferry Blvd. Housatonic River
Exit 33
Ferry Blvd.
Bridgeport Ave.
Exit 34
MP 35.85
Schoolhouse Rd.
Exit 35
To Merritt and
Wilbur Cross
Parkways
MP 39.12
MP 37.58
Daniel S. Wasson
Connector
Exit 38
MP 40.25
3
3
3
1
1
3
3
3+1
3
3
3
95
3
3
3+1
3
3+1
3
1
1
MP 37.45
High St.
Exit 37
3
1
1
1
3
3
1
3
Match Line L
1
Orange
1
1
1
Match Line K
1
1
1
Woodmont Rd.
Exit 40
Boston Post Rd.
Exit 39B / 39A
Milford
Zion Hill
Rd.
LEGEND
1
1
1
MP 40.25
Old Gate Ln.
Exit 40
FIGURE 11
MP 43.91
MP 45.19
MP 41.80
MP 44.87
Orange
Service Area
3
Match Line L
1
1
West Haven
Saw Mill Rd.
Exit 42
3
3+1
1
3
First Ave.
Exit 43
Campbell Ave.
Exit 43
1
1
1
3
3
3
3
3
3
95
3
3
1
Service Area
3
1
3
2
3
1
1
Match Line M
Marsh Hill Rd.
Exit 41
1
West Campus Dr.
1
MP 47.60
MP 47.74
91
Exit 47
Exit 48
4
Wooster St.
West Haven
New Haven
4
MP 45.90
MP 46.05
Kimberly Ave.
Exit 44
Ella T. Grasso Blvd.
Exit 45
MP 46.82
1
1
Match Line M
1
3
1
Sargent Dr.
Exit 46
3+1
3
3+1
2
1
1
1
1
1
3+1
1
2
1
2
2
95
3
2+2
4
2+2
1
1
1
MP 47.26
Long Wharf Dr.
Exit 46
West River
MP 45.90
Kimberly Ave.
Exit 44
LEGEND
MP 47.83
95
FIGURE 12
Technical Memorandum • I-95 Data Collection/Existing Conditions
Similarly, Figures 13 through 17 depict schematically Route 15 from the I-287/ I-684 interchange in
Harris, New York to the West Rock Tunnel in New Haven, Connecticut. It should be noted that the
Wilbur Cross Parkway starts at the Igor I. Sikorsky Memorial Bridge over the Housatonic River to the
Berlin Turnpike north of Meriden. Continuing southbound across the Sikorsky Bridge is the Merritt
Parkway, heading toward New York. Both Parkways are part of Connecticut Route 15.
Route 15 is continuously two lanes in each direction with posted speed limit of 55 mph and 50 mph in
Greenwich, Connecticut. Only on the Igor I. Sikorsky Memorial Bridge south of the Milford connector
in Stratford does the two general purpose lanes widen to three in each direction.
Data Collection
CDM Smith developed a data collection plan to serve several purposes, including obtaining
information on current levels of traffic, travel speeds, regional and commercial vehicle travel
movements, out-of-state traffic percentages, vehicle occupancy levels, and parking utilization at rail
stations. All this data is required to build the foundation for performing a detailed traffic and revenue
study along I-95 and Route 15. The data allows for the calibration of a base year travel demand model
for the I-95 and Route 15 study corridors which will be used to evaluate the potential congestion
relief, revenue generation, and diversion impacts for multiple pricing scenarios and tolling policies.
Traffic Counts
CDM Smith developed a comprehensive list of count locations from which the CT DOT provided
available hourly count data. Those locations not covered by existing data, were counted in November
and December of 2013, and January and February 2014. Traffic volumes in the study area are
discussed in the following sections.
Historical Traffic Growth
Available historical average daily traffic (ADT) for I-95 and Route 15 was assembled from the CT
DOT’s Traffic Monitoring Volume Information Traffic Count Data. Tables 1 and Table 2 display
historical ADTs spanning nearly two decades for I-95 and Route 15, respectively. To assess the
historical growth in traffic and the potential to accommodate future traffic growth, it is useful to
examine past trends and to identify those events that may have caused significant increases or
decreases in traffic growth. In the case of I-95, Table 1 illustrates that over the 20 years shown,
traffic levels has seen modest gains. The mainline volumes between Exist 9 and Exit 10 in Darien have
increased by 0.8% per year over this time period. The ramp volumes at Route 7 in Norwalk and Route
8/25 in Bridgeport, and the Milford Parkway in Milford have shown higher growth, while the ramp
volumes shown for Stamford and New Haven have seen lower growth. The period from 1990 to 1999
showed much higher growth rates, followed by a mix of negative and slightly positive growth between
1999 and 2011 due to the maturity and capacity constraints of the corridor, the recessions
experienced during this time frame, and the multi-modal nature of the corridor.
Table 2 illustrates the historical trends on Route 15. The two mainline data points, North of US-7 and
at Housatonic River Bridge show steady volume increases averaging around 1 percent per year over
the last 20 years (1992-2012). The largest percent increase in the volumes shown occurred at the
Milford Parkway interchange. The majority of the locations shown for Route 15 had decreases in
volumes since 2003, which can be attributed to the maturity of the corridor in combination with the
impacts of the recession and the multi-modal nature of the corridor.
2
February 26, 2014
CT 96725 / 2-26-14 / Landscape 11x17.pptx
287
To Tappan Zee Bridge
Exit 26
1
1
1
3
2+1
2
Exit 26E
1
1
1
2
2+1
2
2
1
2
2
1
1
1
2+1
1
1
1
2
3
2
1
1
2
1
Match Line A
684
1
1
Harrison
1
N. Ridge St.
Exit 29
Rye Brook
Lincoln Ave.
Exit 28
Purchase St.
Exit 27
1
1
To
95
MP 0.09
MP 3.59
King St.
Exit 27
Round Hill Rd.
Exit 28
MP 4.70
Match Line A
N. Ridge St.
Exit 27S
3
1
1
2
2
Exit 30S
1
2
2+1
2
1
2
1 1
1
2
2
2
2
Service Area
1
1
Service Area
1
2
1
2
2
2
2
1
1
1
2
2
1
Match Line B
Old Mill Rd. N.
Exit 29
LEGEND
Exit 27
MP 4.70
Glen Ridge Rd.
Old Mill Rd.
Exit 29
NUMBER OF LANES AND POSTED SPEED LIMITS - ROUTE 15
FIGURE 13
MP 9.50
MP 10.70
Long Ridge Rd.
Exit 34
High Ridge Rd.
Exit 35
MP 8.90
Den Rd.
Exit 33
Greenwich
1
2
1
2
2
2
2
1
1
1
1
2
2
2
2
2
2
1
1
1
1
1
2
2
2 1
2
1
2
2
2
2
1
1
1
Match Line C
Match Line B
North St.
Exit 31
Stamford
MP 5.60
1
New Canaan
South Ave.
Exit 37
Gerdes
Rd.
1 1
1 1
2
2
2
2
1
1
New Canaan Ave.
Carter St.
Exit 38
1
Service Area
2
2
1
Norwalk
Old Stamford Rd.
Exit 36
New Canaan
MP 15.90
MP 14.10
2
2
2
2
2
2
Service Area
1
1
2
2
2
1
2
1
Match Line D
Match Line C
Stamford
MP 13.20
LEGEND
White Birch Rd.
FIGURE 14
MP 17.30
MP 21.60
Exit 39A / 39B
MP 17.60
Main Ave.
Exit 40A / 40B
2
1
2
2
1 1
1
2
2
2
2
2
2
2
2
2
2
2
1 1
1 1
1
1
2
1 1
1
Fairfield
Westport
1
Match Line E
Match Line D
1
Exit 41
Creeping
1 Hemlock Dr.
1
1
1
2
Norwalk
Glover Ave.
MP 20.6
Westport
1
Weston Rd.
Exit 42
Spring Hill Rd.
1
Sunny Ln.
Exit 41
1
MP 27.00
MP 28.50
MP 29.20
Black Rock Tpke.
Exit 44
Easton Tpke.
Exit 46
Park Ave.
Exit 47
Congress St.
Federal St.
Congress St.
2
2
2
Service Area
2
2
2
2
2
Service Area
Exit 44
1
1
2
2
2
2
1
2
2
2
1
1
2
1
LEGEND
1
Jefferson St.
Fairfield
Congress St.
Trumbull
Match Line E
1
2
Match Line F
1
1
FIGURE 15
MP 34.10
Henry Mucci Hwy.
Exit 49N / 49S
Exit 52
MP 30.60
MP 33.70
Main St.
Exit 48
Huntington Tpke.
Exit 51
1
1
1
2
2
1
1
2
2
1
1
2
2
Match Line G
Match Line F
1
Stratford
MP 32.20
Bridgeport
2
1
2
2
2
2
2
2 1
1
1
2
2
1
1
1
MP 32.80
White Plains Rd.
Exit 50
MP 36.90
MP 38.40
Main St.
Exit 53
Match Line G
1
2
2
2
2
1
11
1
2
2
2
2
2
2
2
1
1
1
1
2
1
2
1
2
Match Line H
Milford
1
Orange
Milford
Stratford
Wheelers Farms Rd.
Exit 55A
LEGEND
1
Housatonic River
MP 37.80
Milford Pkwy.
I-95 / US-1 Connector
Exit 54
FIGURE 16
MP 43.00
MP 46.70
Derby Ave.
Exit 57 / 58
MP 41.50
2
2
2
2
2
1
2
1
1
2
1
2
1
1
1
2
2
2
2
1
1
Amity Rd.
2
2
2
2
2
1
2
1
1
Match Line I
2
1 1
1
New Haven
Orange
Match Line H
1
Woodbridge
Grassy Hill Rd.
Exit 56
Turkey Hill Rd.
Woodbridge
Litchfield Tpke.
Exit 59
Pond Lily Ave.
MP 50.20
Hamden
New Haven
Dixwell Ave.
Exit 60
Match Line I
1
2
2
1
2
2
Heroes Tunnel
2
2
2
1
2
LEGEND
1
FIGURE 17
February 26, 2014
Table 1
Historical Average Daily Volumes on I-95 Corridor
Stamford
NB Off
Ramp to
Atlantic St
(Exit 8)
AAPC
90-11
90-99
99-11
12,100
13,200
14,500
15,200
14,700
14,200
14,800
13,100
Norwalk
Bridgeport
Milford
SB On Ramp
from US 1
(Main St)
(Exit 9)
I-95 Between Exit
9 and Exit 10
NB Off ramp to
US 7 NB (Exit 15)
Off Ramp to
Route 8 & 25
(NB & SB)
(Exit 27A)
On Ramp from
Milford Parkway
(NB & SB)(Exit 38)
On Ramp from
I-91 SB to I-95
NB (Exit 48)
Off Ramp
to I-91 NB
from I-95
SB (Exit 48)
7,600
9,000
9,100
9,500
8,000
8,500
9,300
8,600
125,750
125,700
134,522
136,700
135,600
138,600
69,200 NB only
71,400 NB only
70,900 NB only
148,300
148,300
77,800 SB only
72,700 NB only
72,200 NB only
-
11,200
13,300
14,100
14,800
12,900
14,900
14,900
14,500
17,400
18,600
19,000
18,900
19,600
20,500
21,400
21,300
16,900
15,100
16,000
16,900
16,800
17,800
16,600
16,700
17,300
18,200
17,700
18,100
19,600
24,600
19,800
18,900
16400 SB only
34,500
37,100
38,400
38,400
39,700
44,800
42,500
New Haven
0.38%
0.59%
1.24% (2)
0.97%
-0.06%
0.42%
2.51%
0.77% (1),(2)
1.85%
1.24%
2.57%
3.15%
0.92%
0.00%
0.50%
-1.23%
-0.83%
-0.30% (1),(2)
-0.17%
1.77% (2)
0.85%
1.00%
-0.10%
0.36%
Source: CT DOT
(1) Calculated with latest year data available.
(2) One directional volume assumed to be half of total.
Year
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
Darien
3
February 26, 2014
Table 2
Historical Average Daily Volumes on Route 15 Corridor
Stamford
NB/SB On/Off
Ramps to Route
137 (Exit 35)
AAPC
92-12
92-00
00-12
26,300
26,750
29,800
29,600
29,800
27,700
26,600
26,800
Westport
NB/SB On/Off
Ramps to Route
33 (Exit 41)
Stratford
Rtoue 15 at
Housatonic River
Bridge
14,500
15,100
15,800
16,200
17,200
17,100
17,400
16,700
63,800
64,800
66,800
72,100
76,800
78,800
81,400
80,400
Milford
SB Off & NB On
Ramp to/from
Milford Pkwy
11,400
10,300
11,200
12,900
13,500
14,100
14,400
16,100
New Haven
NB/SB On/Off
Ramps to Route
69 (Exit 59)
22,200
23,300
21,700
22,600
23,700
22,900
24,300
-
0.09%
0.85%
1.11%
0.71%
1.16%
1.74%
0.53% (1)
1.49%
0.21%
1.51%
1.40%
1.54%
1.56%
-0.82%
1.28%
0.84%
0.25%
0.91%
1.86%
0.22%
0.81% (1)
Source: CT DOT
(1) Calculated with latest year data available.
Year
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
Norwalk
NB/SB On/Off
Route 15 South of
Ramps to US 7
US 7
(Exit 39A & B)
Ramps Change
17,900
47,900
18,100
48,600
18,700
52,100
18,200
54,000
21,300
61,800
20,800
57,800
22,000
59,300
21,200
59,700
4
Significant long term future growth in traffic volume would not be expected without a physical
expansion of the roadways due to the mature nature of the region and the fact that the current
configuration is operating at capacity for 3 or 4 hours during both the AM peak and PM peak. The
capacity constraints of I-95 and Route 15 will be further will evident by discussion of hourly volumes,
travel speeds, and traffic densities (Level of Service) in the following sections.
Hourly Traffic
Figures 18 and 19 illustrate the historical hourly traffic profile on I-95 between Exits 23 and 24 in
Fairfield. Over this time horizon, the capacity of this section has remained 3 lanes in each direction.
Figure 18 displays the southbound direction of travel clearly showing the AM peaking pattern. The
Southbound AM Peak is shown to start around 6:00AM and ends between 9:00 and 10:00 AM.
Significant conclusions can be drawn from this figure. Only in 1992 and 1993 does the peak reach an
excess of six thousand vehicles per hour at 7:00AM, reflecting the typical capacity of a 3 lane interstate
facility. In 2008 and 2009, the peak hour is actually lower than peak shoulder periods. This occurs
when breakdown conditions occur, where travel speeds are restricting throughput. Typically, volume
determines travel speed conditions. Under breakdown conditions, this flips and travel speeds dictate
throughput. This illustrates that travel demand for the facility is greater than capacity and/or reflects
a downstream bottleneck. Furthermore, years 2008 and 2009 on the graph show a peak spreading
phenomenon in the AM period, where volumes are similar between 6:00AM and 10:00AM.
In addition to the spreading of traffic during peak hours due to breakdown conditions, the spreading
of traffic can also be attributed to a behavioral response of motorists’ where they shift their departure
time to just outside the peak, thus either traveling earlier or later to their destination to avoid
unacceptable levels of congestion or to ensure they reach their destination in time.
In Figure 19, the northbound direction displays that in the early years (1991 through 1994) evening
peaking occurred between 4:00PM and 6:00PM. Unlike the southbound direction, the northbound
direction volumes never exceed volumes higher than 1,900 vehicles per lane (highest recorded
volume of 5,833 in 2009 across all three lanes). Since 2007, the traffic data shows a characteristic “V”
peak pattern between 4:00PM and 6:00PM, illustrating a clear pattern of oversaturation in the
northbound direction, where the traffic demand for the facility was greater than its capacity and
breakdown conditions were present. The volume profile in 2008, 2009, and 2010 show higher
volumes than previous years, but also reflect significant peak spreading where the peak period
volume is effectively flat between 3:00PM and 7:00PM.
Monthly Traffic Variations
Monthly traffic variations on I-95, Route 15, and major arterial routes were assembled and are shown
in Figure 20. As with most heavily travelled interstates in the northeast, traffic is highest during the
summer months with the lowest traffic occurring during the winter months. Overall, traffic levels
throughout most of the year are fairly consistent in the area, ranging between 5 to 10 percent around
the average. In addition to the locations on I-95 and Route 15, monthly traffic variations are showed
at four other locations on major arterials in the study area. In general, monthly variations are with +5 percent around the average. Route 134 is the outlier with a range of +-10 percent due to the
significant spike in volumes during May and June.
Daily Traffic Variations
Figure 21 displays the daily traffic variation at the same I-95, Route 15, and major arterial locations as
presented in the monthly variation figures. Traffic levels increase on I-95 and Route 15 throughout the
5
February 26, 2014
CT 96725 / 2-26-14 / Landscape.pptx
7,000
1992
1993
2008
2009
5,000
4,000
3,000
2,000
1,000
11:00 PM
10:00 PM
9:00 PM
8:00 PM
7:00 PM
6:00 PM
5:00 PM
4:00 PM
3:00 PM
2:00 PM
1:00 PM
12:00 PM
11:00 AM
10:00 AM
9:00 AM
8:00 AM
7:00 AM
6:00 AM
5:00 AM
4:00 AM
3:00 AM
2:00 AM
1:00 AM
0
12:00 AM
Average Weekday Hourly Traffic Volume
6,000
AVERAGE WEEKDAY HOURLY TRAFFIC VOLUME
I-95 SOUTHBOUND BETWEEN EXIT 23 AND EXIT 24 (FAIRFIELD)
FIGURE 18
7,000
1991
1992
1993
1994
2007
2008
2009
2010
5,000
4,000
3,000
2,000
1,000
11:00 PM
10:00 PM
9:00 PM
8:00 PM
7:00 PM
6:00 PM
5:00 PM
4:00 PM
3:00 PM
2:00 PM
1:00 PM
12:00 PM
11:00 AM
10:00 AM
9:00 AM
8:00 AM
7:00 AM
6:00 AM
5:00 AM
4:00 AM
3:00 AM
2:00 AM
1:00 AM
0
12:00 AM
Average Weekday Hourly Traffic Volume
6,000
AVERAGE WEEKDAY HOURLY TRAFFIC VOLUME
I-95 NORTHBOUND BETWEEN EXIT 23 AND EXIT 24 (FAIRFIELD)
FIGURE 19
CT 96725 / 2-26-14 / Portrait.pptx
Percent of Average Annual Daily Traffic
120%
Corridor Locations
110%
100%
90%
80%
70%
60%
Hamden, Route 15 at Benham Rd. Overpass
Norwalk, I-95 at Scribner Ave. Overpass
50%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Note: Route 15 based on 2011-2013 data.
120%
Arterial Locations
110%
100%
90%
80%
70%
New Canaan, Route 134 North of Talmadge Hill Rd.
Orange, Route 34 East of Garden Rd.
Bridgeport, Route 8 at High St. Underpass
New Haven, Whitney Ave. South of Willow St.
60%
50%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MONTHLY HISTORICAL TRAFFIC COUNTS
FIGURE 20
CT 96725 / 2-26-14 / Portrait.pptx
120%
Corridor Locations
110%
100%
90%
80%
70%
60%
Hamden, Route 15 at Benham Rd. Overpass
Norwalk, I-95 at Scribner Ave. Overpass
50%
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Note: CT-15 based on 2011-2013 data.
120%
Arterial Locations
110%
100%
90%
80%
70%
New Canaan, Route 134 North of Talmadge Hill Rd.
Orange, Route 34 East of Garden Rd.
Bridgeport, Route 8 at High St. Underpass
New Haven, Whitney Ave. South of Willow St.
60%
50%
Sun
Mon
Tue
Wed
Thu
Fri
Sat
DAILY HISTORICAL TRAFFIC COUNTS
FIGURE 21
week to the highest level on Friday, which is roughly 10 percent higher than the average daily traffic.
Weekend traffic on Route 15 is less than 90 percent of average daily traffic, while on I-95 it is within 5
percent of average daily traffic. Sunday carries the lowest amount of traffic. The state routes display a
larger variation between weekday and weekend day usage as compared to I-95 and Route 15. On
Sundays traffic is roughly 70 percent of average daily traffic with the exception of Route 34 at 82
percent. Like I-95 and Route 15, travel demand increases throughout the work week to their highest
level on Friday.
Truck Percentages
Table 3 displays truck percentages on I-95 in Greenwich, Connecticut between Exits 4 and 5. On an
average weekday, passenger vehicles, motorcycles, and buses (FHWA vehicle classification 1 through
4) account for roughly 87 percent of the traffic. Single Unit Trucks (FHWA classification 5 through 7)
account for approximately 4% of the traffic. The Simple Trailer Trucks (FHWA vehicle class 8 through
10) account for roughly 8.5 percent of traffic and Double or More Trailer Trucks (FHWA vehicle class
11 through 13) account for about 0.5 percent of traffic. Truck shares are lowest during the AM peak
period at roughly 6 to 7 percent of total traffic, with slightly higher shares during the PM peak period.
As expected, truck shares are at their highest during the night period at approximately 18 percent,
with simple trailer trucks accounting for about 14 percent of total traffic. During the midday time
period truck shares are also significant at 13 to 15 percent of total traffic, with simple trailer trucks
accounting for 7 to 9 percent of traffic. It should be noted that vehicles over eight feet in height,
weighing more than four tons, towing a trailer, or containing more than four wheels are not allowed
on Route 15.
Table 3
I-95 Truck Percentages (north of Exit 4)
Northbound
Car, Motorcycle & Bus
Single Unit Trucks
Simple Trailer Trucks
Double or More Trailer Trucks
Southbound
Car, Motorcycle & Bus
Single Unit Trucks
Simple Trailer Trucks
Double or More Trailer Trucks
AM (7AM-9AM)
MD (9AM-3PM)
PM (3PM-6PM)
NT (6PM-7AM)
Total Day
93.6%
3.2%
3.0%
0.2%
87.1%
5.2%
7.4%
0.2%
92.8%
3.0%
4.0%
0.2%
81.5%
2.9%
14.5%
1.1%
87.4%
3.7%
8.4%
0.5%
92.9%
3.7%
3.1%
0.4%
85.2%
5.0%
9.1%
0.7%
92.0%
2.6%
5.1%
0.2%
82.4%
3.4%
13.1%
1.1%
86.8%
3.8%
8.7%
0.7%
Source: CT DOT
Screenline Counts
A series of north-south and east-west “screenlines” (Figure 22) were developed and a corresponding
list of count locations was identified (Table 4). Traffic counts were collected through existing sources
and where not available, new counts were conducted and summarized into tabular format. These
screenlines are used to demonstrate the levels of travel demand moving east-west and north-south on
the major roadways in the study area. The screenlines are also used in evaluating the travel demand
model by comparing the total traffic assigned across the screenlines versus the count data. Calibration
adjustments to the traffic model are then made to improve the fit to the overall traffic demand across
the screenlines and at the individual count locations.
6
February 26, 2014
91
X:\TFT Group\Projects\CT 96725 I-95 Value Pricing Study\Graphics\I-95 Corridor Congestion Relief Study\Arcview\Screelines.mxd 7/02/14
N
7
84
Stat
e
Putnam Co.
New York
Connecticut
84
5
Litchfield Co.
Waterbury
6
91
691
Pk
wy
.
Dutchess Co.
84
25
2
Danbury
r
Ri
ve
Westchester Co.
15
y.
Hu
tch
Rv ins
r. P on
kw
y.
287
7
1
8
Bridgeport
1
684
1
15
9
91
Haven
91
7
6
95
1
15
Mi
ll
Taconic
sa
w
Pkw
Brk
.
8
34
25
Stamford
New Haven Co.
8 New
Fairfield Co.
287
Middlesex Co.
10
34
7
1
8
25
684
Spr
ai n
4
3
7
y.
Pkw
84
95
2
95
3
4
5
Long Island Sound
1
PROJECT SCREENLINE LOCATION MAP
FIGURE 22
Table 4
2013 Average Weekday Traffic - Screenlines
Screenline
Roadway
Location
Cross Street
% of Total
2013 AWDT
Screenline
Counts
Screenline 1: CT / NY Border
1
1
1
1
1
1
1
I-95 NB
I-95 SB
Mill St
US 1 / Putnam Ave
US 1 / Hillside Ave
Route 15 / Merritt Pkwy NB
Route 15 / Merrit Pkwy SB
1
Total
at
at
at
at
at
E of
E of
CT / NY Border
CT / NY Border
CT / NY Border
CT / NY Border
CT / NY Border
Int 27 / King St
Int 27 / King St
30.4%
31.7%
5.5%
5.7%
5.6%
9.5%
11.6%
71,800
75,000
13,100
13,400
13,200
22,500
27,400
100.0%
236,400
1.0%
2.1%
1.0%
0.4%
17.2%
18.2%
1.7%
2.9%
0.6%
1.2%
1.6%
2.2%
1.3%
0.4%
0.4%
7.4%
7.2%
2.3%
2.0%
2.5%
1.4%
0.6%
2.0%
1.4%
0.7%
0.7%
1.7%
1.4%
8.2%
8.5%
4,800
10,000
4,500
1,800
80,700
85,400
8,200
13,400
2,800
5,700
7,300
10,200
5,900
2,000
1,900
34,700
33,700
10,900
9,300
11,500
6,500
2,700
9,200
6,600
3,100
3,100
7,800
6,600
38,500
39,900
100.0%
468,700
Screenline 2: West of US 7
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Route 136 / Wilson Ave
Washington St
Reed St EB
Reed St WB
I-95 NB
I-95 SB
US 1 / Connecticut Ave NB
US 1 / Connecticut Ave SB
Spring Hill Ave
Riverside Ave
Route 123 / New Canaan Ave EB
Route 123 / New Canaan Ave WB
Broad St
Perry Ave EB
Perry Ave WB
Route 15 / Merrit Pkwy NB
Route 15 / Merrit Pkwy SB
Grist Mill Rd
Route 106 / Wolfpit Rd
Route 33 / Ridgefield Rd
Route 102 / Branchville Rd
Cairns Hill Rd
Route 35 / Danbury Rd EB
Route 35 / Danbury Rd WB
Miry Brook Rd EB
Miry Brook Rd WB
Backus Ave EB
Backus Ave WB
I-84 EB
I-84 WB
2
Total
S of
W of
W of
W of
W of
W of
W of
W of
W of
N of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
W of
Witch Ln
Martin Luther King Dr
West Ave
West Ave
Exit 15
Exit 15
Clinton Ave
Clinton Ave
US 1 / Van Buren Ave
US 1 / Belden Ave
Riverside Ave
Riverside Ave
US 7
US 7
US 7
Int 39 / US 7
Int 39 / US 7
US 7 Expy Ramps
US 7 / Danbury Rd
US 7 / Danbury Rd
US 7 / Danbury Rd
US 7 / Ethan Allen Hwy
US 7 Ramps
US 7 Ramps
US 7 Ramps
US 7 Ramps
Int 3 / US 7
Int 3 / US 7
(continued)
7
February 26, 2014
Table 4
2013 Average Weekday Traffic - Screenlines (Continued)
Screenline 3: W of Route 25
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
I-95 NB
I-95 SB
Route 130 / State St
Route 130 / Fairfield Ave
Pequonnock St
James St
Grand St
US 1 / North Ave
Main St
Lindley St
Capitol Ave EB
Capitol Ave WB
Chopsey Hill Rd
Trumbull Ave
Old Town Rd EB
Old Town Rd WB
Route 15 / Meritt Pkwy NB
Route 15 / Meritt Pkwy SB
Reservoir Ave
Route 127 / White Plains Rd EB
Route 127 / White Plains Rd WB
Daniels Farm Rd
Whitney Ave EB
Whitney Ave WB
Route 111 / Main St NB
Route 111 / Main St SB
Tashua Rd
Hattertown Rd EB
Hattertown Rd WB
Meadow Brook Rd EB
Meadow Brook Rd WB
Huntingtown Rd
Route 302 / Sugar St
West St
US 6 / Mt Pleasant Rd
I-84 EB
I-84 WB
3
Total
W of
W of
W of
W of
W of
W of
W of
W of
N of
W of
W of
W of
W of
W of
W of
W of
W of
W of
N of
W of
W of
S of
W of
W of
S of
S of
W of
W of
W of
W of
W of
S of
W of
W of
W of
W of
W of
Int 27 / Route 25
Int 27 / Route 25
Route 25
Route 25
Route 25
Route 25
Main St
Main St
US 1 / North Ave
Rotue 25
Route 25
Route 25
Route 25
Reservoir Ave
Reservoir Ave
Reservoir Ave
Exit 49S / Route 25
Exit 49S / Route 25
Route 15 / Merritt Pkwy
Route 25
Route 25
Park St
Route 25
Route 25
Route 25
Route 25
Route 25 / Main St
Route 59 / Easton Rd
Route 25 / Main St
Route 25 / Main St
Orchard Hill Rd
Route 25 / Main St
Route 25 / Main St
Route 25 / Hawleyville Rd
Int 9 / Route 25
Int 9 / Route 25
16.6%
15.0%
1.6%
1.4%
1.8%
0.7%
0.8%
2.9%
2.5%
3.1%
1.5%
1.4%
4.5%
0.9%
0.5%
0.5%
7.3%
6.9%
1.4%
2.1%
1.9%
2.2%
0.3%
0.3%
1.2%
1.1%
0.5%
1.0%
0.7%
0.2%
0.1%
0.2%
1.6%
0.2%
2.3%
5.5%
7.2%
89,900
81,300
8,700
7,700
9,700
3,700
4,500
15,700
13,600
16,900
8,200
7,500
24,500
5,100
2,700
2,700
39,700
37,200
7,800
11,500
10,300
11,700
1,600
1,700
6,600
6,200
2,500
5,200
3,700
900
800
900
8,900
1,200
12,300
29,700
39,100
100.0%
541,900
3.0%
3.0%
14.8%
14.5%
11.3%
11.2%
10.3%
10.1%
3.0%
2.3%
7.7%
8.8%
12,200
12,300
59,600
58,600
45,500
45,100
41,500
40,800
12,100
9,200
31,200
35,500
100.0%
403,600
Screenline 4: Housatonic River
4
4
4
4
4
4
4
4
4
4
4
4
US 1 NB
US 1 SB
I-95 NB
I-95 SB
Route 15 / Merritt Pkwy NB
Route 15 / Merritt Pkwy SB
Route 8 NB
Route 8 SB
Bridge St
Route 34 / Roosevelt Dr
I-84 EB
I-84 WB
4
Total
at
at
at
at
at
at
at
at
at
at
at
at
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
Housatonic River
(continued)
8
February 26, 2014
Table 4
Screenline 5: Naugatuck River
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
Route 34 / Main St EB
Route 34 / Main St WB
Division St EB
Division St WB
Bridge St
Route 334 / Maple St
Broad St
Route 8 NB
Route 8 SB
Route 67 / Bank St EB
Route 67 / Bank St WB
Route 42 / Pines Bridge Rd EB
Route 42 / Pines Bridge Rd WB
Depot St
Route 63 / Cherry St EB
Route 63 / Cherry St WB
Maple St EB
Maple St WB
Route 68 / Prospect St
Bristol St EB
Bristol St WB
Route 8 NB
Route 8 SB
S Leonard St EB
S Leonard St WB
Washington Ave
Bank St
I-84 EB
I-84 WB
Freight St
SR 846 / W Main St EB
SR 846 / W Main St WB
5
Total
at
at
at
at
at
at
at
at
at
at
at
at
at
W of
at
at
at
at
at
at
at
at
at
at
at
W of
at
Between
Between
E of
E of
E of
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River (Seymour)
Naugatuck River (Seymour)
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Main St
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River
Naugatuck River (Waterbury)
Naugatuck River (Waterbury)
Naugatruck River
Naugatruck River
Railroad Hill St
Naugatuck River
Int 19 / 20 and 21 / 22
Int 19 / 20 and 21 / 23
Riverside St
Riverside St
Riverside St
5.1%
4.8%
1.9%
1.8%
2.1%
2.1%
2.0%
5.4%
5.8%
2.2%
1.9%
0.7%
0.8%
0.4%
1.9%
1.7%
1.7%
2.4%
3.3%
0.4%
0.4%
5.8%
5.8%
0.5%
0.5%
1.4%
1.6%
14.1%
14.1%
2.2%
2.6%
2.8%
22,800
21,400
8,600
8,000
9,600
9,300
8,900
24,300
25,900
10,000
8,700
3,300
3,400
1,600
8,400
7,500
7,500
10,600
14,700
1,800
1,800
26,300
26,000
2,400
2,400
6,200
7,400
63,500
63,400
10,100
11,700
12,700
100.0%
450,200
11.6%
12.5%
1.1%
1.7%
1.5%
1.7%
1.7%
0.7%
2.1%
1.9%
0.9%
1.5%
0.8%
1.6%
1.0%
1.0%
1.2%
5.1%
4.7%
1.4%
3.7%
1.4%
1.6%
1.4%
1.4%
0.3%
1.1%
1.4%
0.0%
0.0%
0.7%
0.4%
1.8%
0.3%
0.2%
0.7%
4.7%
4.7%
2.0%
0.2%
1.4%
1.5%
6.9%
6.4%
71,100
76,600
6,500
10,700
9,500
10,300
10,500
4,400
12,800
11,400
5,500
9,000
4,800
9,600
6,100
6,000
7,600
31,500
29,000
8,500
22,800
8,600
9,700
8,700
8,600
1,900
6,800
8,900
300
300
4,100
2,300
11,000
2,100
1,200
4,400
29,200
29,100
12,400
1,500
8,700
9,300
42,200
39,300
100.0%
614,800
Screenline 6: E of Route 10
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
I-95 NB
Between
I-95 SB
Between
Washington Ave
SW of
US 1 / Columbus Ave NB
W of
US 1 / Columbus Ave SB
W of
Route 34 EB
W of
Route 34 WB
W of
Edgewood Ave
SE of
Route 10 NB
SE of
Route 10 SB
SE of
Blake St
NW of
Crescent St
E of
Bowen St / Sherman Ave
S of
Dixwell Ave NB
S of
Dixwell Ave SB
S of
Putnam Ave EB
E of
Putnam Ave WB
E of
Route 15 / Wilbur Cross Pkwy NB
Between
Route 15 / Wilbur Cross Pkwy SB
Between
Connolly Pkwy
E of
Skiff St
E of
Whitney Ave NB
S of
Whitney Ave SB
S of
Dixwell Ave EB
E of
Dixwell Ave WB
E of
Route 40 / Mt Carmel Connector
E of
Route 22 / Ives St
E of
Mt Carmel Ave
E of
Tuttle Ave EB
E of
Tuttle Ave WB
E of
Cook Hill Rd
E of
Wallingford Rd
E of
Route 68 / Route 70 / Academy Rd
E of
Creamery Rd
E of
Blacks Rd
E of
E Johnson Ave
E of
I-691 EB
Between
I-691 WB
Between
Route 10 / Highland Ave
N of
Peck Ln
N of
Route 322 / Meriden-Waterbury Tpke EB
E of
Route 322 / Meriden-Waterbury Tpke WB
E of
I-84 EB
Between
I-84 WB
Between
6
Total
Kimberly Ave and 1st Ave
Kimberly Ave and 1st Ave
Route 10
Route 10
Route 10
Route 10
Route 10
Yale Ave
Jewell St
Jewell St
Osborn Ave
Route 10
Route 10 / Arch St
Route 10 / Arch St
Route 10 / Arch St
Route 10 / Dixwell Ave
Int 60 and Int 61
Int 60 and Int 61
Route 10 / Whitney Ave
Route 10 / Main St
Route 10 / Main St
Route 10 / Main St
Int 3 and Int 4
Int 3 and Int 4
I-691 Ramps
I-691
I-84 Ramps
I-84 Ramps
Int 27 / 28 and 29 / 30
Int 27 / 28 and 29 / 30
(continued)
9
February 26, 2014
Table 4
Screenline 7: N of Route 1 / I-95
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
Pemberwick Rd NB
Pemberwick Rd SB
E Weaver St NB
E Weaver St SB
Brookside Dr
Dearfield Dr
Maple Ave
Stanwich Rd
Orchard St
Valley Rd
Sheep Hill Rd
Havemeyer Ln
West Ave
Stillwater Ave NB
Stillwater Ave SB
W Main St NB
Route 137 / Washington Blvd NB
Route 137 / Washington Blvd SB
Atlantic St NB
Atlantic St SB
Grove St NB
Grove St SB
Broad St EB
Broad St WB
Glenbrook Rd
Route 106 / Courtland Ave NB
Route 106 / Courtland Ave SB
Noroton Ave NB
Noroton Ave SB
Route 124 / Mansfield Ave NB
Route 124 / Mansfield Ave SB
Brookside Rd
Richards Ave NB
Richards Ave SB
Scribner Ave EB
Scribner Ave WB
Fillow St
Spring Hill Ave
Riverside Ave
US 7 NB
US 7 SB
Route 123 / Main St
France St
Route 53 / East Ave
Route 33 / Wilton Rd
Main St
Route 136 / Compo Rd N
Long Lots Rd
Bronson Rd NB
Bronson Rd SB
Sturges Rd
Mill Plain Rd
Unquowa Rd NB
Unquowa Rd SB
Round Hill Rd NB
Round Hill Rd SB
Route 135 / N Benson Rd
Crestwood Dr NB
Crestwood Dr SB
Black Rock Turnpike NB
Black Rock Turnpike SB
Villa Ave
Route 58 / Tenxis Hill Cut Off
Route 59 / Brooklawn Ave NB
Route 59 / Brooklawn Ave SB
Park Ave NB
Park Ave SB
Madison Ave
Lindley St
Capitol Ave EB
Capitol Ave WB
Route 8 NB
Route 8 SB
Island Brook Ave Ext NB
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
NW of
NW of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
NW of
W of
N of
Between
Between
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
Over
Over
N of
N of
N of
N of
N of
N of
N of
N of
N of
W of
W of
W of
Between
Between
N of
US 1 / W Putnam Ave
US 1 / W Putnam Ave
US 1 / W Putnam Ave
US 1 / W Putnam Ave
US 1 / W Putnam Ave
US 1 / W Putnam Ave
US 1 / E Putnam Ave
Old Post Rd 6
Valley Rd
Orchard St
US 1 / E Putnam Ave
US 1 / E Putnam Ave
US 1 / W Main St
US 1 / W Main St
US 1 / W Main St
US 1 / Tresser Blvd
US 1 / Tresser Blvd
US 1 / Tresser Blvd
US 1 / Tresser Blvd
US 1 / Tresser Blvd
US 1 / E Main St
US 1 / E Main St
US 1 / E Main St
US 1 / E Main St
US 1 / E Main St
US 1 / E Main St
US 1 / E Main St
Ledge Rd
Ledge Rd
US 1 / Boston Post Rd
US 1 / Connecticut Ave
Taylor Ave
US 1 / Van Buren Ave
Spring Hill Ave
Int 1 and Int 2
Int 1 and Int 2
US 1 / North Ave
US 1 / North Ave
US 1 / North Ave
US 1 / Post Rd
US 1 / Post Rd E
US 1 / Post Rd E
US 1 / Post Rd E
I-95 Ramps
I-95 Ramps
Unquowa Rd
I-95 Ramps
I-95
I-95
I-95 Ramps
I-95 Ramps
I-95 Ramps
I-95
I-95
US 1 / Kings Hwy E
US 1 / Kings Hwy E
US 1 / Kings Hwy E
US 1 / Kings Hwy E
Briarwood Ave
Briarwood Ave
US 1 / North Ave
US 1 / North Ave
US 1 / North Ave
Route 8 Ramps
Route 25
Route 25
Int 4 and Int 5
Int 4 and Int 5
US 1 / North Ave / Capitol Ave
0.2%
0.1%
0.3%
0.3%
0.3%
1.1%
0.9%
0.3%
0.6%
0.8%
0.5%
0.9%
0.6%
0.2%
0.3%
0.6%
1.1%
1.4%
0.8%
0.2%
1.0%
0.9%
0.7%
0.8%
1.1%
0.7%
0.7%
0.7%
0.7%
0.3%
0.2%
0.5%
0.4%
0.5%
0.4%
0.3%
0.4%
0.2%
0.5%
2.8%
2.8%
1.0%
0.6%
0.9%
0.9%
0.3%
0.7%
0.4%
0.1%
0.2%
0.4%
0.6%
0.3%
0.4%
0.3%
0.3%
1.0%
0.1%
0.1%
0.6%
0.5%
0.5%
0.5%
0.3%
0.3%
0.5%
0.6%
0.9%
1.5%
0.7%
0.7%
3.8%
4.0%
0.8%
1,900
1,400
3,100
3,600
4,000
12,400
10,300
3,900
6,500
8,700
5,700
9,900
7,400
2,800
3,400
7,400
12,800
15,800
8,800
2,600
11,900
9,800
8,100
9,100
12,800
8,500
8,100
8,600
8,400
3,300
2,600
5,400
4,900
5,700
4,600
3,400
4,100
2,800
5,700
31,700
32,600
11,800
7,200
10,900
10,100
2,900
8,000
5,100
1,700
1,800
4,100
6,400
3,300
4,200
3,200
3,000
11,800
1,400
1,300
6,700
5,600
6,000
6,000
3,700
3,900
5,900
6,500
10,700
16,900
8,200
7,500
43,100
45,600
8,900
(continued)
10
February 26, 2014
Table 4
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
Island Brook Ave Ext SB
Chopsey Hill Rd EB
Chopsey Hill Rd WB
Noble Ave NB
Noble Ave SB
Huntington Rd
Rotue 127 / E Main St
Success Ave
Broadbridge Ave
Route 108 / Nichols Ave
Route 113 / Main St
Route 110 / E Main St NB
Route 110 / E Main St SB
Naugatuck Ave
Bic Dr
West Ave EB
West Ave WB
Plains Rd EB
Plains Rd WB
Zion Hill Rd
Milford Pkwy NB
Milford Pkwy SB
W River St NB
W River St SB
Route 121 / North St
Forest Rd
Cedarhurst Ln
Woodruff Rd NB
Woodruff Rd SB
Route 152 / Orange Center Rd
Lambert Rd NB
Lambert Rd SB
Old Tavern Rd
Route 114 / Racebrook Rd
Dogburn Lane NB
Dogburn Lane SB
Dogwood Rd
Route 122 / Forest Rd
Route 10 / Ella Grasso Blvd NB
Route 10 / Ella Grasso Blvd SB
Howard Ave
Church St NB
Church St SB
Columbus Ave
Route 34 EB
Route 34 WB
State St NB
State St SB
I-91 NB
I-91 SB
N Frontage Rd EB
N Frontage Rd WB
7
Total
N of
W of
W of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
W of
W of
Wof
Wof
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
W of
N of
N of
N of
N of
N of
N of
N of
Between
Between
N of
N of
Between
Between
Between
Between
US 1 / North Ave / Capitol Ave
US 1 / North Ave
US 1 / North Ave
US 1 / Boston Ave
US 1 / Boston Ave
US 1 / Boston Ave
US 1 / Boston Ave
US 1 / Boston Ave
US 1 / Barnum Ave
US 1 / Barnum Ave
US 1 / Barnum Ave
US 1 / Barnum Ave
US 1 / Barnum Ave
I-95
I-95 Ramps
Grinnell St
Grinnell St
I-95 Ramps
I-95 Ramps
I-95 Ramps
I-95
I-95
I-95
I-95
I-95
I-95
Red Bush Lane
Red Bush Lane
Dogburn Rd
US 1 / Columbus Ave
US 1 / Columbus Ave
US 1 / Columbus Ave
US 1 / Columbus Ave
US 1 / Columbus Ave
Union Ave
Int 1 and I-95
Int 1 and I-95
Water St
Water St
Int 2 Ramps T/F North and I-95
Int 2 Ramps T/F North and I-95
Orange St and State St
Orange St and State St
0.3%
1.2%
1.1%
0.2%
0.3%
0.2%
1.1%
0.5%
0.8%
0.8%
1.5%
0.8%
0.7%
0.3%
0.8%
0.1%
0.1%
0.2%
0.2%
0.5%
2.4%
2.4%
0.1%
0.1%
0.7%
0.2%
0.3%
0.3%
0.3%
0.6%
0.2%
0.2%
0.4%
1.1%
0.1%
0.1%
0.3%
1.3%
0.9%
1.0%
0.7%
0.5%
0.3%
0.4%
3.2%
3.1%
0.3%
0.8%
6.3%
6.5%
0.2%
0.4%
3,600
13,700
12,900
2,300
3,500
1,800
12,400
5,400
9,400
9,300
16,900
9,500
7,700
3,400
8,900
700
800
2,500
2,700
5,800
27,400
27,500
1,300
1,200
7,600
2,500
4,000
3,500
3,400
6,500
2,300
2,800
5,100
13,000
900
900
3,800
14,900
10,000
11,100
8,200
5,500
3,600
5,100
37,300
35,100
3,300
9,500
72,700
74,400
2,800
4,200
100.0%
1,148,300
(continued)
11
February 26, 2014
Table 4
Screenline 8: N of Route 15 / Merritt Parkway
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
Westchester Ave EB
I-287 / Cross-Westchester Expy NB
I-287 / Cross-Westchester Expy SB
Route 120 / Purchase St NB
Route 120 / Purchase St SB
Route 120A / King St NB
Route 120A / King St SB
Riversville Rd
Round Hill Rd NB
Round Hill Rd SB
Lake Ave NB
Lake Ave SB
North St NB
North St SB
Route 104 / Long Ridge Rd NB
Route 104 / Long Ridge Rd SB
Route 137 / High Ridge Rd
Route 104 / Old Stamford Rd
Route 124 / South Ave
White Oak Shade Rd
Route 123 / New Norwalk Ave
Silvermine Ave NB
Silvermine Ave SB
US 7 NB
US 7 SB
Glover Ave
Main Ave NB
Main Ave SB
W Rocks Rd
Grumman Ave
Route 53 / Chestnut Hill Ave
Newtown Tpke
Route 33 / Wilton Rd
Route 57 / Weston Rd
Burr St
Route 58 / Black Rock Tpke
Route 59 / Sport Hill Rd
S Park Ave
Route 111 / Main St
Route 127 / Church Hill Rd
Route 734 / Daniels Farm Rd
Route 25 NB
Route 25 SB
Unity Rd
Route 108 / Huntington Tpke
Route 8 NB
Route 8 SB
Route 110 / Main St NB
Route 110 / Main St SB
Wheelers Farms Rd
Derby Milford Rd
Turkey Hill Rd
Route 121 / Grassy Hill Rd
Route 34 / Derby Ave EB
Route 34 / Derby Ave WB
Route 114 / Racebrook Ave
Johnson Rd
Route 243 / Fountain St
Route 63 / Amity Rd NB
Route 63 / Amity Rd SB
Route 69 / Litchfield Tpke
8
Total
S of
Between
Between
N of
N of
N of
N of
S of
N of
N of
N of
N of
S of
S of
N of
N of
N of
N of
N of
N of
W of
S of
S of
N of
N of
W of
N of
N of
N of
N of
S of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
N of
Between
Between
N of
N of
Between
Between
N of
N of
N of
N of
W of
N of
W of
W of
N of
N of
N of
N of
N of
N of
Corporate Park Dr
Int 9A and Int 9S / N
Int 9A and Int 9S / N
Route 15 / Merritt Pkwy Ramps
Sherwood Ave
Old Mill Rd
Old Mill Rd
Wyckman Hill Ln
Wyckman Hill Ln
Wire Mill Rd
Jelliff Mill Rd
Conrad Ave
Nursery Rd
Carter St
Comstock Hill Ave
Comstock Hill Ave
Main Ave
Glover Ave
Glover Ave
Field St
Plumtree Ln
Chestnut Hill Rd
Edison Rd
Route 127 / Church Hill Rd
Int 8 and Int 9
Int 8 and Int 9
Int 10 and Int 11
Int 10 and Int 11
Route 15 / Wilbur Cross Expy Ramps
Route 15 / Wilbur Cross Expy
Lucy St
Lucy St
Lucy St
1.1%
7.4%
7.0%
0.7%
0.7%
1.0%
1.1%
0.4%
0.3%
0.4%
0.2%
0.3%
0.5%
0.5%
1.2%
1.2%
2.9%
1.5%
1.2%
0.5%
2.3%
0.4%
0.4%
2.9%
2.8%
0.6%
1.1%
1.1%
0.9%
0.5%
0.6%
0.4%
2.2%
2.0%
1.0%
0.2%
1.1%
1.4%
0.7%
1.8%
2.0%
1.8%
3.2%
3.2%
0.8%
1.9%
5.7%
5.7%
2.4%
2.5%
1.1%
1.3%
0.2%
1.3%
2.8%
2.5%
1.2%
0.2%
1.2%
1.3%
1.4%
1.5%
8,000
51,800
48,800
4,800
5,100
7,300
7,700
3,100
2,400
2,600
1,500
1,900
3,500
3,700
8,700
8,500
20,000
10,700
8,100
3,700
16,400
2,500
2,500
20,500
19,800
4,200
7,700
7,500
6,100
3,600
4,400
2,800
15,500
14,000
6,800
1,600
8,000
10,100
4,700
12,800
13,800
12,900
22,200
22,200
5,300
13,200
39,900
39,500
16,900
17,300
7,400
9,100
1,500
9,100
19,400
17,300
8,300
1,700
8,200
9,000
9,600
10,800
100.0%
698,000
12
February 26, 2014
Balanced Traffic Profiles
Traffic count data at each on and off ramp and several mainlines along I-95 and Route 15 was
assembled from existing CT DOT count data and imported into a database for processing. This existing
data was used to prepare a balanced hourly traffic profile representative of an average weekday for I95 and Route 15. The resulting average weekday volumes for I-95 from the New York State line to the
I-91 interchange in New Haven are displayed in thousands in schematic format in Figures 23 through
29. More than a dozen mainline locations experience more than 160,000 vehicles on an average
weekday and occur within Greenwich, Stamford, Darien, Norwalk, and Bridgeport with somewhat
lower volumes occurring through Westport, Fairfield, Stratford, Orange, Milford and West Haven. In
New Haven, south of the I-91 interchange, volumes again reach more than 160,000 vehicles on an
average weekday. The highest mainline volume of 171,100 occurs just south of the Route 25/Route 8
interchange in Bridgeport (Figure 27). Similarly, the ramp volumes to and from the Route 25/Route
8 interchange are among the highest in the corridor. For example, the southbound on ramp from
Route 25/Route 8 carries on average 24,100 vehicles per weekday and it reciprocal movement, an off
ramp from I-95 northbound to Route 25/Route 8 north carries 25,600 vehicles on an average
weekday. Both ramps to and from the north at the Route 25/Route 8 interchange are more than
17,000 vehicles on an average weekday. Another location with significant ramp volumes is at the
Route 7 interchange (Exit 15) in Norwalk. The volumes on each ramp to and from the south reach
15,000 vehicles on an average weekday. Similar volumes to and from the south are accommodated on
the East Avenue ramps (Exit 16), just north of Route 7 interchange. This interchange is less than a
half mile away from the Route 7 interchange, with both ramps serving a surge of traffic to/from
Norwalk and the northern towns such as Wilton, and traffic flowing between I-95 and Route 15. The
other high speed connection between Route 15 and I-95 includes the interchange between the Milford
Parkway (Exit 38) and I-95, with ramps to and from the north carrying a total of about 30,000 vehicles
on an average weekday.
Average weekday volumes along Route 15 are shown in Figures 30 through 34, spanning from the
New York State line through the West Rock Tunnel in New Haven. The highest average weekday
volume of 90,600 vehicles occurs just south of the Milford Parkway over the Housatonic River. Just
south of the Milford Parkway, the ramps to and from the north at Exit 53 handle a total of 23,000
vehicles on an average weekday. This interchange is the direct access into Sikorsky Aircraft, a major
employer for the region. Average weekday volumes of around 50,000 vehicles are lowest toward the
New York end of the corridor in Greenwich. Volumes increase heading northward, building through
the various towns before reaching its peak south of the Milford Parkway. South of the Milford
Parkway, significant ramp volumes occur at the interchanges with Route 8 and Route 25 in Bridgeport
with mainline segments carrying roughly 80,000 vehicles on an average weekday. South of these
major interchanges, average weekday volumes are in the range of 65,000. The Route 7 interchange in
Norwalk carries nearly 20,000 vehicles to and from the south on an average weekday.
Travel Speeds
INRIX
Data on travel speeds were collected through the purchase of 2012 historical data from INRIX for
Route 15, and all major arterials in the study area. In addition, through the I-95 Corridor Coalition,
similar data at 5 minute intervals for all of 2012 was obtained on I-95. Travel speed data for internal
weekdays (Tue, Wed, and Thu) were averaged to represent an average weekday condition, and were
linked to a GIS file in order to visually display the data and to allow correspondence to the travel
13
February 26, 2014
MP 0.78
MP 2.54
MP 3.73
Delavan Ave.
Exit 2
Arch St.
Exit 3
Indian Field Rd.
Exit 4
Byram Rd.
Field Point Rd.
152.5
146.8
Frontage
Rd.
4.9
149.1
161.4
159.3
3.4
4.5
3.6
11.3
5.6
8.0
Match Line A
Greenwich
Connecticut
Port Chester
287
New York
Midland Ave.
Exit 21
To
Tappan Zee
Bridge
95
7.4
4.9
6.8
Ritch Ave.
4.4
3.2
11.2
MP 0.78
Byram Shore Rd.
Exit 2
Midland Ave.
Exit 22
6.4
East Putnam
Ave.
MP 7.30
West Ave.
Exit 6
Greenwich Ave.
Exit 7
Washington MP 7.67
Blvd.
Atlantic St.
Exit 8
Canal St.
140.2
166.8
12.2
8.1
11.1
Grenhart Rd.
95
7.9
7.7
7.7
6.1
Baxter Ave.
11.1
LEGEND
N. State St. 8.6
10.2
Match Line A
6.9
159.3
MP 6.62
Match Line B
161.4
Stamford
E. Putnam Ave.
Exit 5
Greenwich
MP 5.53
Mc Cullough
St.
14.1
S. State St.
8.1
00.0
0.0
Total Mainline Traffic Volume
Ramp Traffic Volume
Note: Volume totals may not reflect
exact summations due to rounding.
All volumes shown represent
thousands of vehicles.
MP 6.50
Harvard Ave.
Exit 6
I-95 WEEKDAY TRAFFIC PROFILE
FIGURE 23
MP 9.28
MP 10.75
MP 8.20
E. Main St.
Exit 9
164.5
10.2
12.9
Noroton Ave.
Exit 10
(Official Use Only)
Darien
140.2
Courtland Ave.
Stamford
Elm St.
Exit 8
166.9
Ledge Rd.
Exit 10
Service Area
3.7
Match Line C
Match Line B
8.8
166.9
3.4
95
11.4
3.6
3.3
8.3
S. State St.
(Official Use Only)
7.3
Brookside Dr.
MP 9.28
Seaside Ave.
Exit 9
MP 12.23
161.0
169.9
3.0
MP 13.14
Boston Post Rd.
Exit 13
Ledge Rd.
153.7
166.1
Boston Post Rd.
Exit 14
LEGEND
3.9
8.4
Match Line C
4.2
MP 14.83
5.1
6.0
11.0
Match Line D
166.9
Boston Post Rd.
Norwalk
Tokeneke Rd.
Exit 12
Boston Post Rd.
Exit 11
Darien
MP 11.61
95
3.7
5.5
5.0
3.9
Connecticut
Welcome
Center
7.9
Boston Post Rd.
Exit 13
Old Kings Hwy.
13.9
6.5
00.0
0.0
Ramp Traffic Volume
Scribner Ave.
Fairfield Ave.
Exit 14
FIGURE 24
MP 15.49
West
Exit 15 Ave.
MP 20.36
MP 18.13
15.0
139.4
141.2
143.9
4.7
4.9
4.4
5.7
0.2
3.8
Match Line E
10.2
2.9
Match Line D
Norwalk
163.5
15.0
Westport
166.1
Riverside Ave.
Exit 17
Fairfield
MP 16.24
East Ave.
Exit 16
Westport
Sherwood Island
Connector
Exit 18
95
11.2
8.7
14.6
5.1
4.8
6.2
5.2
4.5
14.8
Norwalk River
MP 23.12
MP 23.72
Boston Post Rd.
Exit 19
Bronson Rd.
Exit 20
Pease Ave.
Kings Hwy W.
139.4
148.4
144.6
1.7
Jelliff Ln.
Match Line F
95
3.5
6.1
Rennell Dr.
MP 22.88
Center St.
Exit 19
LEGEND
6.2
Match Line E
3.7
2.1
00.0
0.0
Ramp Traffic Volume
Old Post Rd.
Post Rd.
FIGURE 25
MP 25.21
MP 24.38
Mill Plain Rd.
Exit 21
North Benson Rd.
Exit 22
Round Hill Rd.
Meadowbrook Rd.
7.2
5.6
155.8
King’s Hwy.
Exit 23
5.1
3.3
Service Area
Match Line G
4.2
Match Line F
3.1
4.6
MP 25.83
156.6
153.6
148.4
95
6.8
5.5
2.9
Service Area
2.8
3.3
MP 25.83
5.9
4.5 King’s Hwy.
Exit 23
MP 25.03
Round Hill Rd.
Exit 22
Crestwood Rd.
MP 27.64
MP 26.72
Coolidge St.
155.4
155.8
8.5
Stephens Ln.
Dewey St.
Fairfield
Kings Hwy. E.
7.7
Fairfield Ave.
Exit 25
Bridgeport
Black Rock Tpke.
Exit 24
166.0
Match Line H
Match Line G
95
7.3
7.6
4.0
Johnson Dr.
MP 26.72
Black Rock Tpke.
Exit 24
Chambers St.
LEGEND
9.7
4.3
MP 27.43
9.3
00.0
0.0
Ramp Traffic Volume
Pine St.
Commerce Dr.
Exit 25
FIGURE 26
MP 29.03
Exit 27A
MP 29.14
MP 28.29
Wordin Ave.
Exit 26
Park Ave.
MP 29.86
171.1
5.4
Stratford Ave.
Stratford Ave.
Exit 29
Cedar
St.
4.3
Connecticut
Ave.
155.8
148.9
4.7
Match Line I
8.1
4.6
95
2.3
164.7
3.0
North
Frontage Rd.
Match Line H
2.3
17.8
2.9
MP 30.07
Seaview Ave.
Exit 29
East Main St.
Exit 28
24.1
166.0
MP 30.07
Lafayette Blvd.
Exit 27
Mytle
Ave.
5.9
4.4
South
2.5 Frontage Rd.
5.1
Ann St.
Exit 28
4.6
8.6
25.6
17.4
Seaview Ave.
Exit 29
Pequonnock River
MP 29.00
Lafayette Blvd.
Exit 27
MP 32.86
West Broad St.
Exit 32
133.2
4.5
Spada Blvd.
Linden
Ave.
5.0
6.3
3.5
4.2
Mt. Carmel Blvd.
LEGEND
6.9
95
12.4
133.1
Match Line J
3.7
134.1
Match Line I
10.5
MP 32.29
South Ave.
Exit 31
Stratford
148.9
Bridgeport
Hollister Ave.
MP 31.30
Surf Ave.
Exit 30
4.6
5.2
6.9
00.0
0.0
Ramp Traffic Volume
MP 31.07
Lordship Blvd.
Exit 30
MP 32.11
Honeyspot Rd.
Exit 31
Beardsley Ave.
West Broad St.
Exit 32
FIGURE 27
MP 35.85
MP 36.69
Plains Rd.
Exit 36
125.1
2.0
Match Line J
7.6
127.7
6.1
3.6
4.4
3.0
4.7
133.0
2.5
5.4
Match Line K
118.2
Milford
Barnum Ave.
133.1
Stratford
Bic Dr.
Exit 35
95
2.6
5.5
MP 33.91
7.3
5.0
2.5
MP 35.37
Ferry Blvd.
Exit 33
Ferry Blvd.
Housatonic River
Bridgeport Ave.
Exit 34
MP 35.85
Schoolhouse Rd.
Exit 35
To Merritt and
Wilbur Cross
Parkways
MP 39.12
MP 37.58
MP 40.25
142.5
2.3
135.2
137.6
15.0
2.3
4.8
7.8
1.7
Match Line K
9.2
95
1.7
3.3
14.4
6.4
6.2
LEGEND
7.1
Match Line L
7.3
Woodmont Rd.
Exit 40
Boston Post Rd.
Exit 39B / 39A
Orange
133.0
Daniel S. Wasson
Connector
Exit 38
Milford
Zion Hill
Rd.
9.9
6.8
8.1
00.0
0.0
Ramp Traffic Volume
2.6
MP 37.45
High St.
Exit 37
MP 40.25
Old Gate Ln.
Exit 40
FIGURE 28
MP 43.91
MP 45.19
MP 41.80
MP 44.87
Marsh Hill Rd.
Exit 41
8.1
5.2
138.1
Match Line L
Service Area
First Ave.
Exit 43
Campbell Ave.
Exit 43
147.7
143.0
6.3
5.7
9.9
8.7
Match Line M
Orange
135.2
West Haven
Saw Mill Rd.
Exit 42
95
6.5
Service Area
6.5
7.0
West Campus Dr.
8.4
5.5
3.8
MP 47.60
MP 47.74
91
Exit 47
Exit 48
West Haven
New Haven
Wooster St.
MP 45.90
MP 46.05
Kimberly Ave.
Exit 44
Ella T. Grasso Blvd.
Exit 45
13.1
41.9
MP 46.82
147.7
Sargent Dr.
Exit 46
164.4
5.7
8.3
17.0
6.6
6.7
Match Line M
4.0
5.4
162.6
3.7
19.2
13.4
95
LEGEND
39.3
00.0
6.5
6.1
3.4
4.6
West River
4.4
8.5
0.0
MP 47.26
Ramp Traffic Volume
Long Wharf Dr.
Exit 46
MP 45.90
Kimberly Ave.
Exit 44
133.2
MP 47.83
95
FIGURE 29
287
To Tappan Zee Bridge
Exit 26
Harrison
N. Ridge St.
Exit 29
Match Line A
684
Rye Brook
Lincoln Ave.
Exit 28
Purchase St.
Exit 27
To
95
MP 0.09
MP 3.59
King St.
Exit 27
Round Hill Rd.
Exit 28
49.9
N. Ridge St.
Exit 27S
1.0
Old Mill Rd. N.
Exit 29
1.6
52.8
LEGEND
1.4
0.5
Match Line B
Match Line A
Service Area
Service Area
Exit 30S
MP 4.70
51.4
1.0
1.9
0.5
1.0
Exit 27
00.0
0.0
Ramp Traffic Volume
MP 4.70
Glen Ridge Rd.
Old Mill Rd.
Exit 29
ROUTE 15 WEEKDAY TRAFFIC PROFILE
FIGURE 30
MP 9.50
MP 10.70
Long Ridge Rd.
Exit 34
High Ridge Rd.
Exit 35
MP 8.90
Den Rd.
Exit 33
Greenwich
North St.
Exit 31
52.8
57.4
59.2
63.1
4.6
4.2
0.8
1.7
65.3
6.6
6.4
6.5
1.5
0.8
4.2
Match Line C
Match Line B
2.0
Stamford
MP 5.60
1.9
2.6
3.9
5.7
8.1
4.4
South Ave.
Exit 37
Gerdes Rd.
66.5
Norwalk
Old Stamford Rd.
Exit 36
65.3
MP 15.90
MP 14.10
New Canaan
Stamford
New Canaan
MP 13.20
New Canaan Ave.
Carter St.
Exit 38
64.8
68.4
4.3
3.6
3.5
4.4
2.4
4.7
3.1
Service Area
Service Area
2.4
3.5
4.7
3.0
5.4
Match Line D
Match Line C
LEGEND
00.0
0.0
Ramp Traffic Volume
White Birch Rd.
FIGURE 31
MP 17.30
MP 21.60
Exit 39A / 39B
MP 17.60
Main Ave.
Exit 40A / 40B
2.1
2.2
5.9
3.8
1.9
2.1
3.4
2.0
5.0
5.7
2.3
3.9
Fairfield
61.0
Westport
62.5
Exit 41
Creeping Hemlock Dr.
4.1
2.1
MP 20.60
4.4
Match Line E
4.0
Match Line D
6.1
53.8
Norwalk
48.6
Glover Ave.
Westport
68.4
Weston Rd.
Exit 42
7.3
4.9
4.0
Spring Hill Rd.
Sunny Ln.
Exit 41
MP 27.00
MP 28.50
MP 29.20
Black Rock Tpke.
Exit 44
Easton Tpke.
Exit 46
Park Ave.
Exit 47
Congress St.
61.0
Federal St.
65.0
3.3
LEGEND
4.9
3.1
2.6
Service Area
Service Area
2.7
3.5
3.8
Match Line F
Match Line E
3.2
3.6
68.3
65.7
Congress St.
2.7
6.0
4.1
00.0
0.0
Ramp Traffic Volume
Fairfield
Jefferson St.
Trumbull
Congress St.
FIGURE 32
MP 32.20
MP 34.10
Henry Mucci Hwy.
Exit 49N / 49S
Exit 52
MP 33.70
Main St.
Exit 48
Huntington Tpke.
Exit 51
5.7
68.3
6.7
76.9
81.8
70.0
3.0
5.7
6.1
4.3
6.9
5.7
13.8
9.6
Match Line G
4.5
10.2
5.9
76.6
10.1
9.5
Match Line F
5.2
Bridgeport
MP 30.60
Stratford
12.5
3.1
MP 32.80
White Plains Rd.
Exit 50
MP 36.90
MP 38.40
Main St.
Exit 53
Milford
2.2
90.6
Orange
Milford
11.8
Stratford
76.6
Wheelers Farms Rd.
Exit 55A
58.8
LEGEND
3.5
18.3
Match Line G
5.4
3.0
4.4
11.0
24.3
8.7
00.0
1.1
0.6
1.4
Match Line H
1.0
0.0
Ramp Traffic Volume
Housatonic River
MP 37.80
Milford Pkwy.
I-95 / US-1 Connector
Exit 54
FIGURE 33
MP 43.00
MP 46.70
Derby Ave.
Exit 57 / 58
MP 41.50
2.0
1.4
1.6
2.8
2.3
Amity Rd.
3.3
66.6
2.8
3.7
7.0
Match Line I
2.4
62.0
New Haven
57.7
Woodbridge
Orange
58.8
Woodbridge
Grassy Hill Rd.
Exit 56
Turkey Hill Rd.
Match Line H
Litchfield Tpke.
Exit 59
1.7
0.9
1.7
8.7
4.9
4.2
2.6
Pond Lily Ave.
MP 50.20
Match Line I
Hamden
66.6
New Haven
Dixwell Ave.
Exit 60
LEGEND
00.0
0.0
West Rock Tunnel
Ramp Traffic Volume
FIGURE 34
demand model network for comparison against modeled speeds during peak and off peak time
periods.
Figures 35 through 38 display in schematic format corridor of I-95, travel speeds from the INRIX
data for an AM(7-8AM) and PM(5-6PM) peak hour using Googlemap speed colors, peak hour volumes
on mainlines between interchanges, and 24 hour volume graphs at selected locations. During the
morning peak on I-95 southbound, significant speed reductions are experienced between Bridgeport
(Route 8/25 interchange/Exit 27) through the Route 7 interchange in Norwalk (Exit 15) (Figures 36
and 37). What is most interesting is that the hourly volumes within this 14 mile stretch barely reach
5,000 vehicles on facility that should accommodate roughly 6,000 vehicles per hour. This seemingly
counterintuitive result is a function of the total breakdown in travel conditions that is occurring,
where the congestion is limiting the amount of throughput. The hourly traffic graph at the town line of
Bridgeport and Fairfield is the most telling (Figure 37). The graph shows understated southbound
demand with no peaking in the AM period. The volumes do not exceed 5,000 vehicles per hour,
whereas the cross-section of three lanes can handle volumes beyond 6,000 vehicles per hour. This
bottleneck is relieved as traffic gets to Exit 12 and the cross-section widens out to 3 general lanes plus
1 auxiliary lane before widening out to 4 lanes between Exits 9 and 10. In addition to the widening,
the congestion conditions upstream present a metering effect on traffic, allowing traffic downstream
of the queue to flow at normal conditions. Not only do speeds increase to near free flow between Exit
9 and Exit 13 because of this increase in physical capacity, but hourly demand is reaching more than
7,000 vehicles during the peak hour. A second but shorter pocket of congestion is present in Stamford
from Exit 9 through exit 5 in Greenwich in the southbound direction during the AM peak (Figure 35)
as the roadway reduces back down to 3 lanes through Stamford. The speeds during the AM peak
ranged between 30mph and 50mph on an average weekday in this section. The delay shown in the
New Haven area (Figure 38) can likely be attributed to the ongoing I-95 New Haven Harbor Crossing
Corridor Improvement Program.
During the PM peak in the northbound direction, the same limits of congestion are present as were
identified during the AM peak southbound direction. However, unlike the southbound direction, the
Stamford to Darien section also experiences severe congestion. In this section, the northbound
direction does not widen out to 4 lanes, but remains at a cross-section of 3 lanes in the northbound
direction, and therefore does not provide a mechanism to accommodate relief of the queue. The
northbound hourly graph shown between Exit 6 and 7 in Stamford on Figure 35 displays again what
the breakdown in travel operations has on vehicle throughput as only 5,300 vehicles per hour are
processed on a cross-section that should accommodate more than 6,000 vehicles per hour in normal
operations. The breakdown in travel conditions continues through Norwalk with vehicle throughput
reaching north of 6,000 vehicles in some sections where auxiliary lanes are provided. However as
displayed in the hourly profiles on Figure 36, demand is still being restricted by the breakdown in
travel speeds. Breakdown in travel conditions continues into Bridgeport, with relief occurring just
north of the Route 8 and Route 25 interchange (Exit 27) as traffic continues to drop off at the various
exits and I-95 widens out to a 3+1 configuration in the northbound direction beginning north of Exit
25, allowing for normal traffic flow. In all, the extent of this congestion is more than 25 miles. The
delay shown in the New Haven area (Figure 38) in the northbound direction can be attributed to the
ongoing I-95 New Haven Harbor Crossing Corridor Improvement Program.
During the PM peak, delay and friction in traffic flow is also experienced in the southbound direction
from Stamford to the New York State line. The main causes of this condition is the large amount of
14
February 26, 2014
CT 96725 / 2-26-14 / I-95 INRIX Schematic 11x17.pptx
MP 5.53
E. Putnam Ave.
Exit 5
MP 6.62
MP 7.30
MP 8.20
West Ave.
Exit 6
Greenwich Ave.
Exit 7
Elm St.
Exit 8
E. Main St.
Exit 9
MP 11.61
MP 10.75
Darien
MP 3.73
Indian Field Rd.
Exit 4
MP 9.28
Stamford
MP 2.54
Arch St.
Exit 3
Stamford
MP 0.78
Delavan Ave.
Exit 2
Greenwich
Noroton Ave.
Exit 10
Boston Post Rd.
Exit 11
5.4
6.2
6.4
6.5
6.9
6.2
7.6
7.3
7.1
5.1
5.1
5.1
4.9
5.0
3.2
3.8
4.1
4.2
Match Line A
New York
Connecticut
A.M. PEAK HOUR (7:00-8:00 A.M.)
MP 0.78
MP 6.50
MP 7.67
Byram Shore Rd.
Exit 2
Harvard Ave.
Exit 6
Atlantic St.
Exit 8
7,000
8,000
6,000
7,000
6,000
Traffic Volume
4,000
3,000
2,000
5,000
4,000
3,000
2,000
Northbound
Southbound
1,000
Northbound
Southbound
1,000
10:00 PM
8:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
MP 3.73
MP 5.53
Indian Field Rd.
Exit 4
E. Putnam Ave.
Exit 5
MP 9.28
MP 6.62
MP 7.30
MP 8.20
West Ave.
Exit 6
Greenwich Ave.
Exit 7
Elm St.
Exit 8
E. Main St.
Exit 9
MP 11.61
MP 10.75
Darien
MP 2.54
Arch St.
Exit 3
Stamford
MP 0.78
Delavan Ave.
Exit 2
Greenwich
Noroton Ave.
Exit 10
Boston Post Rd.
Exit 11
5.8
5.5
5.4
5.2
5.0
3.2
4.4
4.8
4.9
4.7
5.1
5.3
5.1
5.3
4.9
5.8
5.7
5.7
Match Line D
New York
Connecticut
P.M. PEAK HOUR (5:00-6:00 P.M.)
Stamford
8:00 AM
10:00 AM
6:00 AM
4:00 AM
12:00 AM
8:00 PM
10:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
8:00 AM
6:00 AM
4:00 AM
2:00 AM
0
12:00 AM
0
2:00 AM
Traffic Volume
5,000
70
MP 0.78
MP 6.50
MP 7.67
Byram Shore Rd.
Exit 2
Harvard Ave.
Exit 6
Atlantic St.
Exit 8
65
60
55
50
45
40
Speed (mph)
35
30
25
20
LEGEND
0.0 Traffic (Thousands)
PEAK HOUR VOLUMES AND TRAVEL SPEEDS ALONG THE I-95 CORRIDOR
FIGURE 35
A.M. PEAK HOUR (7:00-8:00 A.M.)
MP 12.23
MP 13.14
MP 14.83
MP 15.49
MP 23.12
MP 18.13
Sherwood Island
Connector
Exit 18
Riverside Ave.
Exit 17
MP 23.72
Fairfield
East Ave.
Exit 16
West Ave.
Exit 15
Westport
MP 16.24
Boston Post Rd.
Exit 14
Norwalk
Boston Post Rd.
Exit 13
Westport
Darien
Tokeneke Rd.
Exit 12
Norwalk
MP 20.36
Boston Post Rd. Bronson Rd.
Exit 20
Exit 19
6.5
6.3
5.8
5.0
4.9
4.9
5.1
3.7
3.6
4.0
4.1
3.7
3.5
3.2
3.3
Match Line B
Match Line A
6.7
MP 22.88
Center St.
Exit 19
7,000
7,000
7,000
6,000
6,000
5,000
5,000
Northbound
Southbound
1,000
8:00 PM
10:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 AM
10:00 PM
8:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
8:00 AM
6:00 AM
4:00 AM
2:00 AM
0
12:00 AM
10:00 PM
8:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
8:00 AM
10:00 AM
6:00 AM
4:00 AM
2:00 AM
Northbound
Southbound
1,000
0
12:00 AM
0
2,000
12:00 PM
1,000
2,000
3,000
10:00 AM
Northbound
Southbound
4,000
8:00 AM
2,000
3,000
6:00 AM
3,000
4,000
4:00 AM
4,000
2:00 AM
Traffic Volume
5,000
P.M. PEAK HOUR (5:00-6:00 P.M.)
MP 12.23
MP 13.14
MP 14.83
MP 15.49
MP 23.12
MP 18.13
Sherwood Island
Connector
Exit 18
Riverside Ave.
Exit 17
Fairfield
East Ave.
Exit 16
West Ave.
Exit 15
Westport
MP 16.24
Boston Post Rd.
Exit 14
Norwalk
Boston Post Rd.
Exit 13
Westport
Darien
Tokeneke Rd.
Exit 12
Norwalk
MP 20.36
MP 23.72
Boston Post Rd. Bronson Rd.
Exit 20
Exit 19
4.6
4.4
5.0
4.5
3.8
3.6
3.5
3.6
5.6
5.4
5.9
6.5
5.8
5.8
5.8
6.0
Match Line E
Match Line D
Traffic Volume
6,000
Traffic Volume
8,000
MP 22.88
Center St.
Exit 19
70
65
60
55
50
45
40
Speed (mph)
35
30
25
20
LEGEND
FIGURE 36
A.M. PEAK HOUR (7:00-8:00 A.M.)
MP 26.72
MP 25.83
MP 25.21
MP 27.64
MP 30.07
MP 32.29
MP 32.86
South Ave. West Broad St.
Exit 31
Exit 32
MP 35.85
Milford
Exit 27A
MP 31.30
Surf Ave.
Exit 30
Stratford
Stratford Ave.
Exit 29
Stratford
MP 28.29
Wordin Ave.
Exit 26
Fairfield Ave.
Exit 25
Bridgeport
North Benson Rd. King’s Hwy.
Exit 22
Exit 23
Fairfield
Black Rock
Tpke.
Exit 24
MP 24.38
Mill Plain Rd.
Exit 21
Bridgeport
MP 29.03
Schoolhouse Rd.
Exit 35
5.2
4.9
4.8
5.2
5.0
4.6
4.3
4.3
4.3
3.7
4.0
3.5
3.6
3.6
4.2
4.4
4.3
3.8
3.0
3.2
3.2
3.0
4.2
Match Line C
Match Line B
5.3
MP 25.03
MP 27.43
MP 29.00, 29.14
Round Hill Rd.
Exit 22
Commerce Dr.
Exit 25
Lafayette Blvd.
Exit 27
MP 29.86
MP 32.11
MP 31.07
MP 33.91
MP 35.37
Ferry Blvd.
Exit 33
Bridgeport Ave.
Exit 34
Honeyspot Rd.
Exit 31
East Main St.
Exit 28
Lordship Blvd.
Exit 30
6,000
8,000
7,000
5,000
Traffic Volume
Traffic Volume
6,000
5,000
4,000
3,000
4,000
3,000
2,000
2,000
8:00 PM
10:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
8:00 AM
10:00 AM
4:00 AM
Milford
6:00 AM
2:00 AM
Stratford
12:00 AM
8:00 PM
10:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
8:00 AM
6:00 AM
4:00 AM
2:00 AM
0
12:00 AM
0
P.M. PEAK HOUR (5:00-6:00 P.M.)
MP 26.72
MP 25.83
MP 25.21
Northbound
Southbound
1,000
Northbound
Southbound
1,000
MP 27.64
MP 30.07
Wordin Ave.
Exit 26
Seaview Ave.
Exit 29
Exit 27A
Stratford
MP 28.29
Fairfield Ave.
Exit 25
Bridgeport
North Benson Rd. King’s Hwy.
Exit 23
Exit 22
Fairfield
Black Rock
Tpke.
Exit 24
MP 24.38
Mill Plain Rd.
Exit 21
Bridgeport
MP 29.03
MP 32.86
MP 32.29
MP 31.30
South Ave. West Broad St.
Exit 32
Exit 31
Surf Ave.
Exit 30
MP 35.85
Schoolhouse Rd.
Exit 35
4.1
4.2
4.9
5.0
5.1
4.5
3.9
3.9
4.1
3.6
3.2
6.6
6.9
6.8
7.3
7.4
7.1
6.4
5.9
5.9
5.6
4.8
4.6
Match Line F
Match Line E
3.9
70
65
MP 25.03
MP 27.43
MP 29.00, 29.14
Round Hill Rd.
Exit 22
Commerce Dr.
Exit 25
Lafayette Blvd.
Exit 27
60
55
50
45
40
Speed (mph)
35
30
25
20
MP 29.86
MP 31.07
MP 32.11
MP 33.91
MP 35.37
Ferry Blvd.
Exit 33
Bridgeport Ave.
Exit 34
Honeyspot Rd.
Exit 31
East Main St.
Exit 28
Lordship Blvd.
Exit 30
LEGEND
FIGURE 37
Woodmont Rd.
Exit 40
Boston Post Rd.
Exit 39B/39A
Marsh Hill Rd.
Exit 41
MP 45.19
Saw Mill Rd.
Exit 42
First Ave.
Exit 43
MP 46.05
New Haven
Milford Pkwy.
Exit 38
MP 41.80
MP 43.91
West Haven
Plains Rd.
Exit 36
Orange
MP 40.25
West Haven
MP 37.58
Milford
MP 36.69
Orange
A.M. PEAK HOUR (7:00-8:00 A.M.)
MP 39.12
MP 47.74
MP 46.82
Sargent Dr.
Exit 46
Boulevard
Exit 45
Exit 48
4.5
4.3
4.1
4.2
4.3
4.5
5.0
5.3
3.6
3.8
4.0
3.9
4.1
4.5
4.6
5.3
4.9
Match Line C
4.1
MP 45.90
MP 37.45
MP 44.87
High St.
Exit 37
Campbell Ave.
Exit 43
MP 47.60
MP 47.26
Long Wharf Dr.
Exit 46
7,000
7,000
5,000
5,000
6,000
6,000
Northbound
Southbound
10:00 PM
8:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
8:00 AM
6:00 AM
4:00 AM
12:00 AM
10:00 PM
8:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
0
12:00 AM
8:00 PM
10:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
8:00 AM
6:00 AM
4:00 AM
2:00 AM
3,000
1,000
0
12:00 AM
8:00 PM
10:00 PM
6:00 PM
4:00 PM
2:00 PM
12:00 PM
10:00 AM
8:00 AM
6:00 AM
4:00 AM
2:00 AM
4,000
2,000
Northbound
Southbound
1,000
0
12:00 AM
0
2,000
Exit 47
5,000
2:00 AM
Northbound
Southbound
1,000
3,000
8:00 AM
Northbound
Southbound
1,000
2,000
4,000
6:00 AM
2,000
3,000
4:00 AM
3,000
4,000
5,000
2:00 AM
4,000
Traffic Volume
6,000
Traffic Volume
6,000
Traffic Volume
Traffic Volume
Kimberly Ave.
Exit 44
P.M. PEAK HOUR (5:00-6:00 P.M.)
MP 39.12
MP 43.91
MP 45.19
MP 46.05
First Ave.
Exit 43
Saw Mill Rd.
Exit 42
New Haven
Marsh Hill Rd.
Exit 41
West Haven
Woodmont Rd.
Exit 40
Boston Post Rd.
Exit 39B/39A
Orange
Milford Pkwy.
Exit 38
MP 41.80
West Haven
Plains Rd.
Exit 36
Milford
MP 37.58
Orange
MP 47.74
MP 40.25
MP 36.69
MP 46.82
Boulevard
Exit 45
Sargent Dr.
Exit 46
Exit 48
5.0
4.7
4.7
5.0
5.5
5.7
6.0
5.7
4.8
5.3
5.0
4.6
4.5
4.2
4.4
5.2
5.2
Match Line F
4.5
MP 37.45
MP 44.87
High St.
Exit 37
Campbell Ave.
Exit 43
MP 45.90
Kimberly Ave.
Exit 44
70
65
60
55
50
45
40
Speed (mph)
35
30
25
20
MP 47.26
Long Wharf Dr.
Exit 46
MP 47.60
Exit 47
LEGEND
FIGURE 38
traffic entering I-95 southbound during the PM peak from the Atlantic Street and Washington
Boulevard ramps and from weaving and merging of traffic southward along this segment.
To further illustrate the build-up and duration of congestion across time and space,” heat” maps were
produced for I-95 and Route 15. Figures 39 through 42 show speed as color bands across the entire
length of the I-95 corridor by travel direction over the AM and PM peak periods. The X-axis of the
graphic is to scale by mile post and the y-axis is the selected time frame. The green color range
illustrates speeds from 70mph to 60mph; yellow to light orange illustrates decrease in speed from
55mph to 40mph and dark orange to red illustrate speeds of 35mph to 20mph.
Figure 39 displays the northbound direction of I-95 from Greenwich to New Haven between 6AM and
Noon. Very little delay is occurring during the northbound AM period. The slight degradation of
speeds in the vicinity of New Haven can likely be attributed to the ongoing I-95 New Haven Harbor
Crossing Corridor Improvement Program.
During the AM peak period in the southbound direction (Figure 40) significant delay is evident by the
large swath of red and orange between 6:30AM and 10:00AM. Although there is some delay
experienced between 7:30 and 9:30 between Stamford and Greenwich, most of the congestion is
experienced between Bridgeport and Stamford. Table 5 shows the average speeds for an AM peak
hour (8-9AM) for a trip between New Haven and the New York State Line and between Bridgeport and
Stamford. During the peak 8AM hour, 20 minutes of delay are being experienced on average for a
through trip, with 18 minutes of that delay occurring between Bridgeport and Stamford. The
additional 18 minutes of travel time over this 24 mile trip is an increase of more than 80 percent when
compared to a delay free trip. Significant variation across the months occurs, with May and June
having the highest levels of delay and the months of January and February having the lowest. On
an average weekday in May and June, delay skyrockets to around 40 minutes. It should be pointed
out that the month of November should be considered somewhat of an anomaly in 2012 as Super
Storm Sandy had significant impacts to travel in the northeast, including to metro north and in
particular to rail stations and subway lines in New York City.
Figure 41 displays the northbound direction between 3PM and 9PM. The swath of yellow and orange
colors spans across 5 hours between Stamford and Norwalk. Similar to the AM southbound direction,
congestion on average is shown to be significant between Bridgeport and Greenwich, spanning nearly
4 hours in duration. Table 6 shows the average speeds for a PM Peak hour (5-6PM) for a trip between
New Haven and the New York State Line and between Stamford and Bridgeport. During the peak 5PM
hour, 20 minutes of delay are being experienced on average for a through trip, with 16 minutes of that
delay occurring between Stamford and Bridgeport. The additional 16 minutes of travel time over this
24 mile trip is an increase of more than 70 percent when compared to a delay free trip.
Figure 42 displays the southbound direction of I-95 from Greenwich to New Haven between 3PM and
9PM. Some delay is evident through Greenwich and into Stamford between 5PM and 7PM reflecting
the reverse commute out of Connecticut toward New York.
Figures 43 through 46 show heat maps of Route 15. Figure 43 displays average weekday travel
conditions in the northbound direction of Route 15 from Greenwich to New Haven between 6AM and
Noon. As shown, the facility operates at normal travel speeds with no evidence of recurring
congestion.
15
February 26, 2014
MP 0.00
MP 5.53
MP 9.28
Stamford
Norwalk
MP 20.36
Westport
MP 26.72
Fairfield
MP 31.07
Bridgeport
MP 33.91
Stratford
MP 40.25 MP 41.80
Milford
Orange
MP 45.19
West Haven
MP 47.91
New Haven
11:00
10:00
9:00
8:00
7:00
6:00
Greenwich
MP 18.00
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: I-95 AVERAGE WEEKDAY TRAVEL SPEEDS - NORTHBOUND AM
FIGURE 39
MP 0.00
MP 5.53
MP 9.28
Stamford
Norwalk
MP 20.36
Westport
MP 26.72
Fairfield
MP 31.07
Bridgeport
MP 33.91
Stratford
MP 40.25 MP 41.80
Milford
Orange
MP 45.19
West Haven
MP 47.91
New Haven
11:00
10:00
9:00
8:00
7:00
6:00
Greenwich
MP 18.00
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: I-95 AVERAGE WEEKDAY TRAVEL SPEEDS - SOUTHBOUND AM
FIGURE 40
Table 5
Average Weekday Southbound AM Peak (8 - 9 AM)
New Haven to Greenwich (47 miles)
Time
Period
Travel
Time
(minutes)
Travel Speed
(mph)
Freeflow
44
Average
Bridgeport to Stamford (24 miles)
Delay (minutes)
Travel
Time
(minutes)
Travel Speed
(mph)
Delay (minutes)
65
0
22
65
0
64
44
20
40
36
18
JAN
56
50
12
32
45
10
FEB
52
54
8
29
50
7
MAR
60
47
16
36
40
14
APR
64
44
20
40
36
18
MAY
85
33
41
59
24
37
JUN
82
34
38
57
25
35
JUL
65
43
21
40
36
18
AUG
61
46
17
37
39
15
SEP
72
39
28
47
31
25
OCT
75
38
31
50
29
28
NOV
72
39
28
46
31
24
DEC
60
47
16
36
40
14
Data Source: INRIX
16
February 26, 2014
MP 0.00
MP 5.53
MP 9.28
Stamford
Norwalk
MP 20.36
Westport
MP 26.72
Fairfield
MP 31.07
Bridgeport
MP 33.91
Stratford
MP 40.25 MP 41.80
Milford
Orange
MP 45.19
West Haven
MP 47.91
New Haven
20:00
19:00
18:00
17:00
16:00
15:00
Greenwich
MP 18.00
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: I-95 AVERAGE WEEKDAY TRAVEL SPEEDS - NORTHBOUND PM
FIGURE 41
Table 6
Average Weekday Northbound PM Peak (5 - 6 PM)
Greenwich to New Haven (47 miles)
Time
Period
Travel
Time
(minutes)
Travel Speed
(mph)
Freeflow
44
Average
Stamford to Bridgeport (24 miles)
Delay (minutes)
Travel
Time
(minutes)
Travel Speed
(mph)
Delay (minutes)
65
0
22
65
0
64
44
20
38
38
16
JAN
54
52
10
30
48
8
FEB
52
54
8
29
50
7
MAR
57
49
13
33
44
11
APR
68
41
24
40
36
18
MAY
74
38
30
45
32
23
JUN
87
32
43
52
28
30
JUL
70
40
26
39
37
17
AUG
73
39
29
42
34
20
SEP
61
46
17
36
40
14
OCT
62
45
18
38
38
16
NOV
74
38
30
47
31
25
DEC
70
40
26
44
33
22
Data Source: INRIX
17
February 26, 2014
MP 0.00
MP 5.53
MP 9.28
Stamford
Norwalk
MP 20.36
Westport
MP 26.72
Fairfield
MP 31.07
Bridgeport
MP 33.91
Stratford
MP 40.25 MP 41.80
Milford
Orange
MP 45.19
West Haven
MP 47.91
New Haven
20:00
19:00
18:00
17:00
16:00
15:00
Greenwich
MP 18.00
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: I-95 AVERAGE WEEKDAY TRAVEL SPEEDS - SOUTHBOUND PM
FIGURE 42
CT 96725 / 2-26-14 / CT-15 INRIX Schematic 11x17.pptx
MP 0.00
MP 5.60
Stamford
MP 14.10
New Canaan
MP 17.60
Norwalk
MP 21.60
Westport
MP
34.10
MP 28.50
Fairfield
Trumbull
MP
MP 37.50 38.50
Stratford Milford
MP 43.2
Orange
MP 47.10
New Haven
11:00
10:00
9:00
8:00
7:00
6:00
Greenwich
MP 10.70
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: CT-15 TRAVEL SPEEDS - NORTHBOUND AM
FIGURE 43
MP 0.00
MP 5.60
Stamford
MP 14.10
New Canaan
MP 17.60
Norwalk
MP 21.60
Westport
MP 28.50
Fairfield
MP 34.10
Trumbull
MP 37.50
Stratford
MP 38.50
Milford
MP 43.2
Orange
11:00
10:00
9:00
8:00
7:00
6:00
Greenwich
MP 10.70
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: CT-15 TRAVEL SPEEDS - SOUTHBOUND AM
FIGURE 44
MP 0.00
MP 5.60
Stamford
MP 14.10
New Canaan
MP 17.60
Norwalk
MP 21.60
Westport
MP
34.10
MP 28.50
Fairfield
Trumbull
MP
MP 37.50 38.50
Stratford Milford
MP 43.2
Orange
MP 47.10
New Haven
19:00
18:00
17:00
16:00
15:00
Greenwich
MP 10.70
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: CT-15 TRAVEL SPEEDS - NORTHBOUND PM
FIGURE 45
MP 0.00
MP 5.60
Stamford
MP 14.10
New Canaan
MP 17.60
Norwalk
MP 21.60
Westport
MP 28.50
Fairfield
MP 34.10
Trumbull
MP 37.50
Stratford
MP 38.50
Milford
MP 43.2
Orange
19:00
18:00
17:00
16:00
15:00
Greenwich
MP 10.70
70
65
60
55
50
45
40
35
30
25
20
Speed (mph)
INRIX: CT-15 TRAVEL SPEEDS - SOUTHBOUND PM
FIGURE 46
During the AM peak period in the southbound direction (Figure 44) significant delay is evident by the
large swath of red, orange, and yellow between 7:00AM and 9:30AM between the Route 25
interchange (Exit 49) in Trumbull and Exit 35 in Stamford, covering a distance of more than 20 miles.
It’s interesting to note that there seems to be a clear separation within the traffic operations of the
corridor at the Norwalk/Westport line. At Exit 41 in Westport and Exit 40A/40B in Norwalk large
amounts of traffic Exit Route 15 and as a result the merging and weaving activity of traffic is causing
friction. The head of another queue is present around Exit 35 and Exit 36 in Stamford where
significant traffic is exiting and entering Route 15 resulting in merging and weaving activity and
friction along the mainline. This delay extends from 7:30 to 9:00AM, while the congestion between
Exit 40 and Exit 49 is more in the range of 7:00 to 9:30AM. Similar to I-95, the extents of congestion
can be generally described from Trumbull/Bridgeport to Stamford.
Figure 45 displays the travel conditions in the northbound direction of Route 15 between 3PM and
8PM. The swath of yellow and orange is concentrated in the 4:30 to 6:30PM range. Similar to the AM
southbound direction, congestion on average is shown to be significant between Trumbull and
Stamford, spanning nearly 25 miles. Heaviest delay is experience through Exits 41 and 42 in Westport
due to high levels of merging and weaving of traffic exiting and entering Route 15. Route 15 is unique
in that the ramp access is configured in a way that results in a metering effect of entering traffic and
therefore helps to dampen the traffic operations impact on the mainline. However, the need for traffic
to accelerate quickly to enter the facility also impacts the right lane, thereby having a negative effect
on the operations. Congestion within Trumbull is a result of the Route 25 and Route 8 interchange
merging and weaving friction, as well as traffic entering from Route 127 (Exit 50).
Figure 46 displays the southbound direction of Route 15 from Greenwich to New Haven between
3PM and 8PM. No recurring delay is evident with average traffic operations displaying normal
conditions.
Skycomp
Additional data on queuing and bottlenecks was collected through Skycomp surveillance of AM and
PM peak hours of I-95 and the Route 15 from Route 34 in New Haven to I-287 in New York. Using a
fixed-wing airplane to patrol the survey area, Skycomp collected high-resolution overlapping digital
photographs during morning and evening peak hours suitable for the extraction of traffic densities
and queue lengths along I-95 and Route 15. The data was summarized from three flight days during
morning and evening peak hours of the two corridors. In total twelve flights were performed to
provide average weekday queuing and bottleneck statistics.
Figures 47 through 54 illustrate performance rating (Level of Service) tables of traffic conditions on
I-95 and Route 15 for morning and evening peak periods. The ratings are presented in tables by
highway segment, by direction, and by time slice. Each rating represents the average of approximately
three flyovers (from three different days), minus any data affected by incidents. The ratings are
density-based level-of-service (LOS) designations A, B, C, D, E and F, as defined in the Highway
Capacity Manual (HCM). The definitions from the 2010 HCM are given below:
LOS A describes free-flow operations. Free-flow speed (FFS) prevails on the freeway, and vehicles are
almost completely unimpeded in their ability to maneuver within the traffic stream. The effects of
incidents or point breakdowns are easily absorbed.
LOS B represents reasonably free-flow operations, and FFS on the freeway is maintained. The ability
to maneuver within the traffic stream is only slightly restricted, and the general level of physical and
18
February 26, 2014
Southbound
D
E
F
C
E
E
E
E
B
E
C
D
E
C
F
D
E
C
E
D
D
D
E
D
D
D
E
D
E
D
D
D
E
D
D
F
F
E
E
D
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
E
F
F
F
F
19
20
21
22
E
E
E
F
E
E
E
F
F
F
F
F
F
F
E
F
F
F
E
F
F
F
F
F
Matchline A
D
E
D
18
D
Round Hill Rd. / SR 135
E
D
D
17
D
Mill Plan Rd.
C
D
C
16
F
Bronson Rd.
C
C
15
E
SR 33 / SR 136
B
14
MP 22.88
MP 25.03
MP 23.12 MP 23.72 MP 24.38 MP 25.21
MP 20.36
D
East Ave.
D
13
MP 18.13
D
US 7
C
12
D
US 1
C
11
C
US 1
C
10
D
US 1
C
9
C
MP 14.83 MP 15.49 MP 16.24
Center St. / US 1
9:00-9:30
B
C
MP 13.14
Sherwood Island Connector
C
8
D
MP 10.75 MP 11.61 MP 12.23
SR 136 (Tokeneke Rd.)
8:30-9:00
7
MP 9.28
Noroton Ave.
C
6
C
Greenwich Ave.
8:00-8:30
5
C
West Ave.
C
4
MP 7.67
MP 8.20
MP 7.30
C
E. Putnam Ave.
7:30-8:00
3
MP 6.50
MP 6.62
MP 5.53
B
Indian Field Rd.
B
I-287
7:00-7:30
MP 3.73
US 1 (Boston Post Rd.)
2
B
Arch St.
21
6:30-7:00
Delavan Ave. / Byram Shore Rd.
Time
MP 2.54
Atlanric St. / Elm St.
MP 0.78
Northbound
21
F
F
2
3
E
D
E
4
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
E
D
5
E
E
6
B
B
C
C
7
C
D
B
C
8
C
D
C
C
A
C
C
9
C
C
D
10
D
C
11
C
A
B
B
B
C
C
C
C
D
D
F
C
12
D
C
E
13
B
C
B
14
C
C
D
C
15
C
C
C
C
16
B
B
17
18
A
A
B
B
C
B
B
C
C
B
B
B
B
C
C
B
C
19
C
Mill Plan Rd.
D
E
C
B
B
C
D
20
C
Matchline B
D
E
D
C
B
F
D
D
B
B
Bronson Rd.
E
C
C
B
Center St, / US 1
D
C
B
SR 33 / SR 136
B
MP 22.88
MP 25.03
MP 23.12 MP 23.72 MP 24.38 MP 25.21
MP 20.36
B
East Ave.
C
MP 18.13
B
US 7
C
B
MP 14.83 MP 15.49 MP 16.24
US 1
C
C
US 1
B
B
US 1
C
C
Noroton Ave.
A
MP 13.14
F
9:00-9:30
C
MP 10.75 MP 11.61 MP 12.23
F
8:30-9:00
C
MP 9.28
E
C
Atlantic St. / Elm St.
8:00-8:30
C
Greenwich Ave.
C
MP 7.67
MP 8.20
MP 7.30
C
West Ave.
7:30-8:00
MP 6.50
MP 6.62
MP 5.53
E. Putnam Ave.
C
MP 3.73
Indian Field Rd.
7:00-7:30
MP 2.54
Arch St.
C
I-287
6:30-7:00
MP 0.78
Time
A
21
22
I-95 MORNING LEVEL OF SERVICE PROFILE
FIGURE 47
Southbound
F
9:00-9:30
F
F
F
F
F
F
E
C
F
D
E
B
E
B
D
C
D
C
E
C
B
C
C
B
C
C
C
C
MP 47.60
39
40
41
42
43
45
47
B
C
C
C
C
C
D
C
C
C
B
C
D
C
D
C
D
D
D
C
D
B
B
C
C
B
C
C
D
C
C
C
C
C
D
D
C
C
C
C
C
C
C
C
D
C
C
C
C
C
C
C
C
C
C
D
D
D
SR 34
F
C
MP 46.05
38
1st Ave
D
F
C
C
MP 44.87
MP 45.19
Sawmill Rd.
F
E
D
MP 43.91
Marsh Hill Rd.
F
F
C
MP 41.80
Woodmont Rd.
F
F
C
C
MP 40.25
SR 10 (Ella T Grasso Blvd.)
F
F
F
C
36
MP 39.12
F
F
F
35
MP 37.58
Milford Pkwy.
F
F
34
MP 36.69
Plains Rd.
F
33
MP 35.85
Schoolhouse Rd.
F
F
32
MP 35.37
US 1 (Bridgeport Ave.)
F
F
F
31
MP 33.91
US 1 / SR 110 / Ferry Blvd.
F
F
F
F
30
MP 32.86
West Broad St.
F
F
F
29
Honeyspot Rd. / South Ave.
F
28
MP 31.07 MP 32.11
MP 31.30 MP 32.29
SR 113 / Surf Ave.
8:30-9:00
F
27
SR 130 / Stratford Ave.
8:00-8:30
F
F
26
SR 8 / SR 25
7:30-8:00
F
25
Wordin Ave.
7:00-7:30
24
State St. / SR 130
Matchline A
6:30-7:00
US 1 (Kings Hwy.)
Time
23
US 1 / Black Rock Tpke.
22
MP 29.00
MP 28.29 MP 29.03 MP 29.86 MP 30.07
SR 127 / East Main St.
MP 27.43
MP 26.72 MP 27.64
MP 25.03
MP 25.21
D
C
MP 25.83
Northbound
22
23
B
24
B
C
B
A
C
B
25
26
27
C
B
28
C
B
29
B
B
30
31
C
B
C
A
B
32
C
C
B
B
33
B
C
B
B
B
34
35
C
B
C
B
B
C
B
B
36
C
D
C
C
C
37/38
C
B
D
B
C
C
C
E
D
D
C
B
B
39
40
C
C
D
D
E
F
E
F
C
C
E
C
B
C
C
C
41
42
43
MP 47.60
A
45
C
D
D
SR 34
B
C
B
MP 46.05
B
Campbell Ave.
B
D
B
B
MP 44.87
MP 45.19
MP 43.91
Sawmill Rd.
C
C
B
MP 41.80
Marsh Hill Rd.
C
C
B
B
MP 40.25
Woodmont Rd.
B
C
B
B
MP 39.12
C
B
A
MP 37.58
Milford Pkwy. / High St.
B
B
C
B
MP 36.69
Plains Rd.
B
C
B
B
MP 35.85
Schoolhouse Rd.
C
C
B
MP 35.37
B
A
West Broad St.
B
B
MP 33.91
B
B
C
MP 32.86
US 1 / SR 110 / Ferry Blvd.
D
B
C
D
B
9:00-9:30
C
A
MP 31.07 MP 32.11
MP 31.30 MP 32.29
SR 113 / Surf Ave.
B
C
B
C
B
SR 8 / SR 25
B
A
8:30-9:00
A
MP 29.00
MP 28.29 MP 29.03 MP 29.86 MP 30.07
Wordin Ave.
8:00-8:30
B
State St. / SR 130
7:30-8:00
B
US 1 (Kings Hwy.)
7:00-7:30
Matchline B
6:30-7:00
MP 27.43
MP 26.72 MP 27.64
MP 25.03
25.21
Time MP
D
B
47
MP 25.83
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
SKYCOMP DATA - I-95 MORNING LEVEL OF SERVICE PROFILE
FIGURE 48
Southbound
E
E
E
E
D
F
D
F
F
D
D
E
B
E
E
C
D
C
A
C
C
C
C
C
D
C
C
D
C
C
C
C
C
C
F
F
D
C
D
D
D
C
D
C
E
D
C
C
C
D
C
C
C
C
C
B
C
C
D
B
C
C
19
20
21
22
C
B
C
C
B
C
B
C
B
C
B
B
C
C
B
B
C
C
C
C
B
B
C
B
Matchline A
D
D
D
18
C
F
F
C
D
17
B
Mill Plan Rd.
E
D
C
16
F
Bronson Rd.
D
C
15
F
SR 33 / SR 136
B
14
MP 22.88
MP 25.03
MP 23.12 MP 23.72 MP 24.38 MP 25.21
MP 20.36
D
East Ave.
D
13
MP 18.13
D
US 7
C
12
C
US 1
C
11
C
US 1
C
10
C
US 1
C
9
C
MP 14.83 MP 15.49 MP 16.24
Center St. / US 1
D
C
MP 13.14
6:30-7:00
8
D
MP 10.75 MP 11.61 MP 12.23
6:00-6:30
D
7
MP 9.28
Noroton Ave.
E
6
C
Greenwich Ave.
5:30-6:00
5
C
West Ave.
D
4
MP 7.67
MP 8.20
MP 7.30
C
E. Putnam Ave.
5:00-5:30
3
MP 6.50
MP 6.62
MP 5.53
C
Indian Field Rd.
C
I-287
4:30-5:00
MP 3.73
2
B
Arch St.
21
4:00-4:30
Time
MP 2.54
MP 0.78
Northbound
21
C
F
D
2
3
F
F
4
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
F
F
5
F
F
6
F
F
F
F
7
F
F
F
F
8
F
F
F
F
F
F
F
9
F
F
F
10
F
F
11
F
F
F
F
F
F
F
F
F
F
F
F
F
12
F
F
F
13
F
F
C
14
F
F
F
D
15
F
F
F
E
16
F
E
17
18
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
E
D
19
F
Mill Plan Rd.
F
F
F
F
F
F
D
20
F
Matchline B
F
F
F
F
F
C
D
E
F
F
Bronson Rd.
C
C
F
F
Center St. / US 1
C
F
D
SR 33 / SR 136
D
MP 22.88
MP 25.03
MP 23.12 MP 23.72 MP 24.38 MP 25.21
MP 20.36
F
East Ave.
E
MP 18.13
F
US 7
E
F
MP 14.83 MP 15.49 MP 16.24
US 1
C
F
US 1
C
F
US 1
C
F
Noroton Ave.
F
MP 13.14
B
6:30-7:00
F
MP 10.75 MP 11.61 MP 12.23
C
6:00-6:30
F
MP 9.28
C
D
5:30-6:00
C
Greenwich Ave.
B
MP 7.67
MP 8.20
MP 7.30
B
West Ave.
5:00-5:30
MP 6.50
MP 6.62
MP 5.53
E. Putnam Ave.
C
MP 3.73
Indian Field Rd.
4:30-5:00
MP 2.54
Arch St.
B
I-287
4:00-4:30
MP 0.78
Time
E
21
22
SKYCOMP DATA - I-95 EVENING LEVEL OF SERVICE PROFILE
FIGURE 49
Southbound
B
C
C
B
B
C
C
B
C
D
C
C
B
C
A
C
C
B
B
33
34
35
36
38
39
40
41
42
43
45
B
D
C
C
C
C
C
C
D
C
B
B
B
C
C
B
B
B
C
C
C
C
C
C
D
D
C
B
C
C
C
B
D
C
D
C
B
B
B
B
B
C
D
D
C
D
E
C
D
D
D
E
C
C
C
C
D
C
E
D
E
D
C
C
C
C
D
B
C
B
C
C
MP 47.60
47
D
F
F
F
SR 34
C
D
MP 46.05
32
1st Ave.
C
D
MP 44.87
MP 45.19
D
C
C
C
MP 43.91
Sawmill Rd.
C
D
B
MP 41.80
Marsh Hill Rd.
D
D
MP 40.25
Woodmont Rd.
C
MP 39.12
C
B
MP 37.58
Milford Pkwy.
C
C
MP 36.69
Plains Rd.
C
D
MP 35.85
Schoolhouse Rd.
C
MP 35.37
C
31
MP 33.91
West Broad St.
D
30
MP 32.86
US 1 / SR 110 / Ferry Blvd
C
C
29
B
9:00-9:30
C
28
MP 31.07 MP 32.11
MP 31.30 MP 32.29
SR 113 / Surf Ave.
C
C
27
SR 8 / SR 25
C
C
26
8:30-9:00
D
C
25
Wordin Ave.
8:00-8:30
Matchline A
7:30-8:00
B
24
State St. / SR 130
C
6:30-7:00
7:00-7:30
23
22
US 1 / (Kings Hwy.)
Time
MP 29.00
MP 28.29 MP 29.03 MP 29.86 MP 30.07
MP 27.43
MP 26.72 MP 27.64
MP 25.03
MP 25.21
D
C
MP 25.83
Northbound
22
E
23
C
24
C
25
C
F
26
B
27
C
D
28
D
B
29
C
D
30
31
B
D
C
B
32
B
C
33
D
B
C
C
34
F
C
C
D
B
B
35
E
C
36
D
D
C
D
B
37/38
F
E
F
F
C
D
F
F
F
B
C
C
C
C
B
39
C
D
C
B
40
F
F
C
C
41
F
F
C
C
42
F
B
43
MP 47.60
D
E
E
E
SR 34
B
C
MP 46.05
D
Campbell Ave.
C
C
D
MP 44.87
MP 45.19
MP 43.91
Sawmill Rd.
C
D
C
D
MP 41.80
Marsh Hill Rd.
D
D
C
MP 40.25
Woodmont Rd.
C
D
B
Plains Rd.
D
E
C
B
MP 39.12
F
B
E
D
MP 37.58
D
F
C
D
C
MP 36.69
Milford Pkwy. / High St.
C
D
D
D
D
MP 35.85
Schoolhouse Rd.
D
C
D
D
MP 35.37
E
D
MP 33.91
US 1 / SR 110 / Ferry Blvd
C
D
MP 32.86
West Broad St.
F
D
SR 113 / Surf Ave.
D
MP 31.07 MP 32.11
MP 31.30 MP 32.29
E
9:00-9:30
E
E
D
E
D
B
SR 8 / SR 25
F
F
F
8:30-9:00
F
E
F
Wordin Ave.
8:00-8:30
F
MP 29.00
MP 28.29 MP 29.03 MP 29.86 MP 30.07
D
State St. / SR 130
7:30-8:00
7:00-7:30
D
F
6:30-7:00
Matchline B
MP 27.43
MP 26.72 MP 27.64
MP 25.03
MP 25.21
US 1 / (Kings Hwy.)
Time
D
C
45
47
MP 25.83
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
SKYCOMP DATA - I-95 EVENING LEVEL OF SERVICE PROFILE
FIGURE 50
Southbound
31
MP 8.90 MP 9.50
33
34
C
7:00-7:30
B
B
B
A
B
C
C
C
C
7:30-8:00
B
8:00-8:30
C
D
D
D
C
C
B
8:30-9:00
B
D
C
B
9:00-9:30
A
A
B
B
B
B
C
B
D
C
D
D
Den Rd.
B
North St.
C
Old Mill Rd.
B
Round Hil Rd
B
SR 120A (King St.)
A
N Ridge Rd.
A
Lincoln Ave.
A
Purchase St.
A
I-287
6:30-7:00
D
C
B
C
C
C
D
B
B
C
C
C
MP 10.70
MP 13.20
MP 14.10
MP 15.90
35
36
37
38
C
C
D
C
D
D
B
D
D
D
E
D
D
D
D
D
D
D
D
D
F
F
F
D
MP 17.30 MP 17.60
39
MP 20.60
40
41
D
C
D
F
E
C
F
F
F
F
F
E
F
F
E
C
A
C
Matchline A
MP 5.60
29
SR 33 (Wilton Rd.)
MP 4.70
28
Main Ave.
MP 3.59
30 / 27
US 7
MP 0.09
SR 123 (New Canaan Rd.)
29
SR 124 (South Ave.)
28
SR 106 (Old Stamford Rd.)
27
SR 137 (High Ridge Rd.)
26
SR 104 (Long Ridge Rd.)
Time
Northbound
B
9:00-9:30
26
B
B
27
C
B
28
B
29
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
A
B
B
B
B
B
B
A
30 / 27
B
C
C
B
28
C
C
B
B
29
B
A
C
B
31
A
B
33
B
C
B
C
B
34
B
A
C
C
B
35
C
C
B
D
A
B
36
A
B
C
C
C
37
B
A
A
B
B
A
C
B
B
C
B
B
38
A
B
A
B
39
B
Matchline B
B
B
B
A
MP 20.60
SR 33 (Wilton Rd.)
C
C
A
A
Main Ave.
8:30-9:00
B
B
B
A
MP 17.30 MP 17.60
US 7
C
B
A
MP 15.90
8:00-8:30
B
A
MP 14.10
SR 124 (South Ave.)
D
A
MP 13.20
7:30-8:00
A
MP 10.70
B
A
B
MP 8.90 MP 9.50
Den Rd.
B
MP 5.60
North St.
B
MP 4.70
Old Mill Rd.
7:00-7:30
MP 3.59
Round Hil Rd
A
N Ridge Rd.
A
Lincoln Ave.
A
Purchase St.
A
I-287
6:30-7:00
SR 120A (King St.)
MP 0.09
Time
A
40
41
SKYCOMP DATA - ROUTE 15 MORNING LEVEL OF SERVICE PROFILE
FIGURE 51
Southbound
F
9:00-9:30
F
F
F
F
D
C
F
F
F
E
F
F
F
F
F
D
F
D
F
F
C
B
MP 41.50
55
D
B
B
B
C
B
D
A
C
C
B
B
C
D
E
F
D
C
F
C
B
C
C
C
C
C
B
C
MP 43.00
56
C
C
C
B
C
C
B
B
57
B
C
C
C
C
Matchline A
C
54
SR 34 (Derby Ave.)
D
53
Wellington Rd.
F
MP 36.90 MP 37.80 MP 38.45
52
SR 121 (Grassy Hill Rd)
F
F
51
Milford Pkwy.
F
50
SR 110 (Main St.)
F
F
49
SR 8
F
F
48
Huntington Tpke.
F
F
D
MP 32.20 MP 32.80 MP 33.70 MP 34.10
MP 30.60
47
SR 127 (White Plains Rd.)
8:30-9:00
F
F
46
SR 25
8:00-8:30
F
E
MP 28.50 MP 29.20
SR 111 (Main St.)
7:30-8:00
44
Park Ave
F
MP 27.00
42
SR 59 (Easton Tpke.)
7:00-7:30
SR 33 (Wilton Rd.)
6:30-7:00
D
MP 21.60
SR 58 (Black Rock Tpke.)
41
SR 57 (Weston Rd.)
MP 20.60
Time
B
Northbound
9:00-9:30
A
41
C
42
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
A
44
C
A
B
B
B
B
C
B
46
C
B
47
B
C
B
B
48
B
B
49
A
A
B
B
B
A
A
A
C
C
D
C
D
C
50
C
B
C
B
51
C
B
52
B
D
C
C
B
B
53
B
B
54
C
B
B
A
A
55
B
C
C
B
Matchline B
A
A
MP 43.00
SR 34 (Derby Ave.)
B
A
A
A
Milford Pkwy.
B
MP 41.50
A
SR 8
A
Wolf Harbor Rd
B
A
MP 36.90 MP 37.80 MP 38.45
SR 110 (Main St.)
B
B
A
Huntington Tpke.
A
B
B
A
8:30-9:00
A
B
A
MP 32.20 MP 32.80 MP 33.70 MP 34.10
SR 25
8:00-8:30
B
A
MP 30.60
SR 111 (Main St.)
B
A
Park Ave
7:00-7:30
A
MP 28.50 MP 29.20
A
SR 33 (Wilton Rd.)
6:30-7:00
7:30-8:00
MP 27.00
MP 21.60
20.60
SR 57 (Weston Rd.)
TimeMP
A
56
57
SKYCOMP DATA - ROUTE 15 MORNING LEVEL OF SERVICE PROFILE
FIGURE 52
Southbound
B
B
B
B
5:30-6:00
A
B
6:00-6:30
B
B
B
B
6:30-7:00
A
A
B
A
B
B
B
B
B
B
B
B
C
B
B
B
A
C
B
B
C
C
C
B
B
B
B
C
B
B
A
B
B
MP 13.20
MP 14.10
MP 15.90
35
36
37
38
C
C
D
B
B
C
A
D
C
B
C
B
B
C
D
C
C
B
A
C
C
C
C
B
MP 17.30 MP 17.60
39
MP 20.60
40
41
B
A
B
B
A
B
D
C
D
B
B
B
C
B
A
D
A
A
Matchline A
C
B
MP 10.70
SR 33 (Wilton Rd.)
B
34
Main Ave.
5:00-5:30
33
US 7
C
MP 8.90 MP 9.50
C
31
SR 124 (South Ave.)
C
MP 5.60
29
A
MP 4.70
28
4:30-5:00
MP 3.59
30 / 27
B
N. Ridge Rd.
B
Lincoln Ave.
B
Purchase St.
B
I-287
4:00-4:30
MP 0.09
Den Rd.
29
North St.
28
Old Mill Rd.
27
Round Hil Rd
26
SR 120A (King St.)
Time
Northbound
MP 3.59
MP 4.70
MP 5.60
MP 8.90 MP 9.50
MP 10.70
MP 13.20
MP 14.10
MP 15.90
MP 17.30 MP 17.60
MP 20.60
4:00-4:30
C
B
B
B
B
B
C
C
C
E
E
E
E
E
E
F
4:30-5:00
B
C
D
B
B
C
C
C
F
F
F
F
F
F
F
F
5:00-5:30
C
C
C
C
B
C
C
D
C
E
F
F
F
F
F
F
5:30-6:00
D
B
B
B
C
C
C
C
F
F
F
F
E
F
F
F
6:00-6:30
C
B
B
B
B
C
B
C
F
F
F
F
F
F
F
F
C
6:30-7:00
26
B
27
B
28
B
29
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
B
30 / 27
B
28
C
29
C
31
F
33
F
34
D
35
E
36
E
37
D
38
F
39
Matchline B
MP 0.09
Time
E
40
41
SKYCOMP DATA - ROUTE 15 EVENING LEVEL OF SERVICE PROFILE
FIGURE 53
Southbound
B
9:00-9:30
A
B
B
B
C
C
C
B
C
B
C
B
B
B
B
B
C
C
C
B
B
B
MP 41.50
55
D
B
B
B
C
B
D
B
C
C
A
B
C
D
C
D
D
D
C
D
B
C
B
C
B
C
B
A
MP 43.00
56
B
C
C
B
B
A
A
B
57
B
B
C
B
B
Matchline A
B
54
SR 34 (Derby Ave.)
C
53
Wellington Rd.
C
MP 36.90 MP 37.80 MP 38.45
52
B
B
51
Milford Pkwy.
B
50
SR 110 (Main St.)
B
B
49
SR 8
B
C
MP 32.20 MP 32.80 MP 33.70 MP 34.10
48
Huntington Tpke.
B
B
B
MP 30.60
47
8:30-9:00
B
A
46
SR 25
8:00-8:30
B
B
MP 28.50 MP 29.20
SR 111 (Main St.)
7:30-8:00
44
Park Ave.
B
MP 27.00
42
7:00-7:30
SR 33 (Wilton Rd.)
6:30-7:00
B
MP 21.60
41
SR 57 (Weston Rd.)
MP 20.60
Time
B
Northbound
E
9:00-9:30
41
D
42
LOS
Density
A/B/C/D
D/E
E/F
F
Less Than 31
31 - 40
41 - 62
More Than 62
E
44
E
F
F
F
D
E
D
C
46
F
C
47
D
E
D
C
48
E
C
49
C
C
E
C
D
C
C
C
B
C
E
F
E
D
50
C
C
C
B
51
C
B
52
C
D
B
D
B
B
53
C
C
B
A
54
C
C
B
55
C
C
D
B
Matchline B
F
C
MP 43.00
SR 34 (Derby Ave.)
C
C
Wellington Rd.
C
C
Milford Pkwy.
A
F
SR 8
D
MP 41.50
E
E
MP 36.90 MP 37.80 MP 38.45
SR 110 (Main St.)
E
F
E
Huntington Tpke.
F
E
F
E
8:30-9:00
F
E
A
MP 32.20 MP 32.80 MP 33.70 MP 34.10
SR 25
8:00-8:30
F
A
MP 30.60
SR 111 (Main St.)
F
F
Park Ave.
7:00-7:30
E
MP 28.50 MP 29.20
F
SR 33 (Wilton Rd.)
6:30-7:00
7:30-8:00
MP 27.00
MP 21.60
20.60
SR 57 (Weston Rd.)
TimeMP
B
56
57
SKYCOMP DATA - ROUTE 15 EVENING LEVEL OF SERVICE PROFILE
FIGURE 54
psychological comfort provided to drivers is still high. The effects of minor incidents and point
breakdowns are still easily absorbed.
LOS C provides for flow with speeds near the FFS of the freeway. Freedom to maneuver within the
traffic stream is noticeably restricted, and lane changes require more care and vigilance on the part of
the driver. Minor incidents may still be absorbed, but the local deterioration in service quality will be
significant. Queues may be expected to form behind any significant blockages.
LOS D is the level at which speeds begin to decline with increasing flows, with density increasing more
quickly. Freedom to maneuver within the traffic stream is seriously limited and drivers experience
reduced physical and psychological comfort levels. Even minor incidents can be expected to create
queuing, because the traffic stream has little space to absorb disruptions.
LOS E describes operation at capacity. Operations on the freeway at this level are highly volatile
because there are virtually no usable gaps within the traffic stream, leaving little room to maneuver
within the traffic stream. Any disruption to the traffic stream, such as vehicles entering from a ramp or
a vehicle changing lanes, can establish a disruption wave that propagates throughout the upstream
traffic flow. At capacity, the traffic stream has no ability to dissipate even the most minor disruption,
and any incident can be expected to produce a serious breakdown and substantial queuing. The
physical and psychological comfort afforded to drivers is poor.
LOS F describes breakdown, or unstable flow. Such conditions exist within queues forming behind
bottlenecks. Breakdowns occur for a number of reasons:
Traffic incidents can temporarily reduce the capacity of a short segment, so that the number of
vehicles arriving at a point is greater than the number of vehicles that can move through it.
Points of recurring congestion, such as merge or weaving segments and lane drops, experience
very high demand in which the number of vehicles arriving is greater than the number of
vehicles that can be discharged.
In analyses using forecast volumes, the projected flow rate can exceed the estimated capacity of
a given location.
In all cases, breakdown occurs when the ratio of existing demand to actual capacity, or of forecast
demand to estimated capacity, exceeds 1.00. Operations immediately downstream of, or even at, such
a point, however, are generally at or near LOS E, and downstream operations improve (assuming that
there are no additional downstream bottlenecks) as discharging vehicles move away from the
bottleneck.
LOS F operations within a queue are the result of a breakdown or bottleneck at a downstream point.
In practical terms, the point of the breakdown has a v/c ratio greater than 1.00, and is also labeled LOS
F, although actual operations at the breakdown point and immediately downstream may actually
reflect LOS E conditions. Whenever queues due to a breakdown exist, they have the potential to extend
upstream for considerable distances.
Figures 47 and 48 provide similar and consistent findings to the INRIX speed data, further
illustrating the significant queuing and bottlenecks experienced on the I-95 corridor during the AM
peak period. During the AM Peak in the southbound direction, travel operations are at LOS of “F” from
the Bridgeport/Stratford town line at Exit 30 (Figure 48) until the Norwalk/Darien town line at exit
19
February 26, 2014
12. From there, conditions ease to LOS of “D” with pockets of “E” and “F” until Exit 3. The duration of
LOS “F” spans several hours. In the northbound direction, LOS “E” and “F” were observed between I287 and Exit 7 in Stamford. A small pocket of near breakdown conditions was observed between Exits
13 and 14 in Norwalk.
Figures 49 and 50 display the same information for I-95 during the PM peak period. In the
northbound direction LOS “F” begins south of Exit 4 and continues to Exit 27 in Bridgeport. As shown,
this breakdown condition spans the entire survey period during the evening commute. In the
southbound direction, high densities were recorded between the New York State line and Exit 8 in
Stamford indicative of the reverse commute back to New York.
Figures 51 and 52 provide morning peak period LOS conditions for Route 15. Similar to I-95,
oversaturation is evident in the southbound direction from Exit 35 in Stamford to Exit 50 in
Bridgeport (22miles) and lasting for of 2 to 3 hours. The northbound direction during the AM peak
period shows much lower densities with the majority of Route 15 operating a LOS “A” or “B”, with
some small time periods and segments operating at LOS “C”.
Figures 53 and 54 provide evening peak period LOS conditions for Route 15. Similar to I-95,
oversaturation is evident in the northbound direction from Exit 34 in Stamford to Exit 51in Bridgeport
(24 miles) and lasting for of 2 to 3 hours in duration. The southbound direction during the PM peak
period shows much lower densities with the majority of Route 15 operating a LOS “A” or “B”, with
some small time periods and segments operating at LOS “C”.
Skycomp provided a standalone report documenting the survey, density measurements, and locations
of queuing and probable causes of the bottlenecks causing breakdown conditions. Their report is
included as an Appendix.
Travel Patterns
Information on travel patterns were collected using Airsage anonymous cell phone data for traffic
analysis zones (TAZs) as showed in Figure 55. The passive survey identified travel origins and
destinations for the area shown for use in analyzing regional and corridor travel patterns and to
compare against the CT DOT Statewide travel demand model, particularly in the I-95 and Route 15
study area. To better understand the corridor travel patterns, the smaller TAZs were grouped into
twelve super-zones along the corridor (Figure 56), representing major cities and towns boundaries.
Table 7 provides a summary of all trips by these twelve super-zones. As would be expected,
Stamford, Norwalk, Bridgeport, and New Haven have the highest totals for trip origins and
destinations. Because these four cities span across large dense areas and many TAZs, they also have
the highest volumes of internal trips. Table 8 provides a summary of percent trips by origin. This
table illustrates the distribution of each origin across the twelve destinations. Bordering towns along
with inner-city trips account for the highest percent share as shown by the highest percentages along
the diagonal portion of the table..
Vehicle License Plate Survey
A visual license plate survey was conducted in May 2013 at three locations on I-95 and three locations
on Route 15. On I-95, these surveys were performed in Greenwich at the James Street overpass, in
Milford at the High Street overpass, and at the Sasco Creek Road overpass in Westport. On Route 15,
the license plate surveys were collected from overpasses located in Greenwich on Round Hill Road, in
Fairfield from Morehouse Road, and in Woodbridge from Racebrook Road. License plate vehicle
20
February 26, 2014
Internal Zones
Internal TAZ-based Zones
Internal Tract-based Zones
AIRSAGE O-D ZONE STRUCTURE
FIGURE 55
New Haven
X:\TFT Group\Projects\CT 96725 I-95 Value Pricing Study\Graphics\I-95 Corridor Congestion Relief Study\Arcview\Corridor Superzones.mxd \ 7/02/14
41
41
N
20
Fairfield
39
17
4
16
1
2
95
3
22
21
15
5
6
91
12
18
10
8
25
7
15
8
11
26
25
New Haven
19
New York
38
8
84
40
15
24
37
13
23
52
95
9
95
Long Island Sound
1 - Greenwich
2 - Stamford
3 - Darien
4 - Norwalk
5 - Westport
6 - Fairfield
7 - Bridgeport
8 - Stratford
9 - Milford
10 - Orange
11 - West Haven
12 - New Haven
CORRIDOR SUPERZONES
FIGURE 56
February 26, 2014
Table 7
AirSage Daily O-D Data
Trips
TO
FROM
1 Greenwich
2 Stamford
3 Darien
4 Norwalk
5 Westport
6 Fairfield
7 Bridgeport
8 Stratford
9 Milford
10 Orange
11 West Haven
12 New Haven
1
2
Greenwich Stamford
50,917
15,953
16,958
74,783
2,445
9,666
5,577
14,790
1,823
3,543
3,085
5,831
3,529
6,740
1,676
2,955
1,377
2,424
1,226
2,043
693
1,090
1,639
2,623
90,945
142,442
39,100
129,939
70,395
116,652
154,627
9
Milford
1,315
2,475
605
2,426
1,422
3,318
6,667
10,547
29,559
10,525
3,348
4,041
81,939
76,248
3
4
5
6
7
8
Darien
Norwalk Westport Fairfield Bridgeport Stratford
3%
6%
2%
3%
4%
2%
7%
11%
3%
4%
4%
2%
29%
20%
3%
5%
5%
2%
6%
49%
9%
6%
6%
2%
2%
16%
44%
14%
7%
3%
1%
7%
8%
46%
18%
4%
1%
5%
3%
14%
50%
10%
1%
4%
2%
6%
18%
41%
1%
3%
2%
4%
8%
13%
1%
3%
1%
3%
5%
4%
0%
2%
1%
2%
3%
2%
0%
1%
1%
2%
3%
2%
9
Milford
1%
2%
2%
2%
2%
3%
4%
13%
39%
14%
5%
3%
10
11
12
Orange West Haven New Haven
1,212
711
1,762
1,993
1,108
2,641
547
298
709
1,967
1,052
2,499
1,078
577
1,345
2,349
1,179
2,668
4,492
2,035
4,331
3,492
1,415
2,710
10,888
3,139
3,954
30,060
10,511
7,701
11,003
28,070
17,877
8,124
17,977
106,165
77,206
68,072
Total
89,920
144,197
39,068
130,274
68,075
115,443
159,046
82,541
75,165
75,375
68,737
154,087
154,362
1,201,928
10
11
12
Orange West Haven New Haven
1%
1%
2%
1%
1%
2%
1%
1%
2%
2%
1%
2%
2%
1%
2%
2%
1%
2%
3%
1%
3%
4%
2%
3%
14%
4%
5%
40%
14%
10%
16%
41%
26%
5%
12%
69%
Total
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
Table 8
AirSage Daily O-D Data
% Trips by Origin
TO
FROM
1 Greenwich
2 Stamford
3 Darien
4 Norwalk
5 Westport
6 Fairfield
7 Bridgeport
8 Stratford
9 Milford
10 Orange
11 West Haven
12 New Haven
Total
1
2
Greenwich Stamford
57%
18%
12%
52%
6%
25%
4%
11%
3%
5%
3%
5%
2%
4%
2%
4%
2%
3%
2%
3%
1%
2%
1%
2%
8%
12%
3%
11%
6%
10%
13%
7%
6%
6%
6%
13%
100%
21
Total
3
4
5
6
7
8
Darien
Norwalk Westport Fairfield Bridgeport Stratford
2,588
5,431
1,904
3,118
3,373
1,636
9,984
15,292
3,863
5,924
6,324
2,852
11,344
7,758
1,297
1,813
1,788
798
7,851
63,647
12,213
7,723
7,323
3,207
1,141
11,031
30,056
9,347
4,823
1,889
1,694
7,736
9,653
52,686
20,479
4,764
1,757
8,110
5,391
21,576
78,915
15,503
743
3,213
1,891
4,978
14,906
34,014
606
2,407
1,389
3,299
6,276
9,847
548
1,987
990
2,458
4,027
3,299
259
1,055
521
1,195
2,196
1,430
585
2,271
1,228
2,536
4,198
2,701
registrations were identified for the States of Connecticut, New York, New Jersey, Massachusetts, New
Hampshire, Rhode Island, and all others.
The data was collected during daylight hours between 7AM and 6PM and is summarized in Tables 9
and 10 for I-95 and Route 15, respectively. Table 9 shows the distribution among states at each
survey location along I-95, by direction, by time period, and for the total day. Over the survey time
period, only 36 percent of traffic at the James Street overpass in Greenwich consisted of Connecticut
vehicles. This location is less than a half mile north of the New York State line. New York plates
accounted for the largest number of vehicles at 39 percent, while New Jersey was a distant third
among specific States identified at 8.5 percent. Interestingly, the significant commute pattern into
Connecticut from New York is shown by the high percentage of New York plates headed northbound
during the AM peak period (68 percent). At the Sasco Creek Road location in Westport, 68 percent of
traffic had Connecticut plates, while New York accounted for 13 percent. At the High Street overpass
in Milford, 75 percent of traffic observed had Connecticut license plates, while New York plates
accounted for 7 percent of the total traffic.
Table 10 displays the license plate distribution among the State classified for Route 15. At Round Hill
Road overpass on Route 15 in Greenwich, the percent share of Connecticut plates was 54% of total
traffic, significantly higher than the I-95 location in Greenwich. At the Morehouse Drive overpass,
Connecticut plates accounted for 75 percent of overall traffic, increasing to 80 percent at the
Racebrook Road location just north of Route 34. Overall, Route 15 contains a higher share of
Connecticut plates when compared to I-95. This would be expected as I-95 would tend to
accommodate more interstate travel than Route 15 and long distance freight or any vehicles over
eight feet in height, weighing more than four tons, towing a trailer, or containing more than four
wheels are not allowed on Route 15.
Vehicle Occupancy Survey
Vehicle occupancy surveys were also performed at the same three locations on I-95. Vehicles were
classified as containing one, two, or three or more passengers. However, the distinction between two
and three passengers was difficult to visually confirm. Therefore, the data presented in Table 11
reflects only the breakdown of single and two or more occupant vehicles.
As would be expected, the highest concentration of single occupant vehicles occurs during the AM
period, as commuting to work would be the major trip purpose. For the total survey period, single
occupant vehicles account for 80 percent of the vehicles on I-95 at the James Street survey location in
Greenwich, 84 percent of the vehicles on I-95 at the Sasco Creek Road survey location in Westport,
and 81 percent of vehicles at the High Street location in Milford.
A second source of occupancy percentages was summarized from the 2008 Traffic Accident Database
maintained by the Division of Planning Inventory & Data, Bureau of Policy and Planning. This data
includes the number of vehicle occupants in crashes on the non-local roadways within the three
Regional Planning Agencies through the project: South Western Regional Planning Agency (SWRPA),
Greater Bridgeport Regional Council (GBRC), and South Central Regional Council of Governments
(SCRCOG). Table 12 shows the daily variation of single, HOV 2, and HOV 3+ occupants. For the total
day, single occupant vehicles made up 77 percent of the vehicle composition involved in crashes, while
HOV2 and HOV3+ made up 16 percent and 7 percent respectively. The AM peak accounted for the
highest concentration of single occupant vehicles at 87 percent while the midday and evening
accounted for the highest concentration of HOV vehicles. This variation throughout the day is
consistent with the visual survey and is expected. When isolating the percentages to coincide with the
22
February 26, 2014
Table 9
Percent of Traffic by State of Vehicle Registration
Manual Count
Location
Period
CT
State of Vehicle Registration
NJ
MA
NH
NY
RI
Other
Total
I-95 NB at High Street
7AM-9AM
9AM-3PM
3PM-6PM
78.7
68.2
79.2
8.2
10.2
4.1
4.5
4.9
2.4
1.1
4.0
4.4
0.5
1.5
1.7
0.7
1.2
0.6
6.3
10.0
7.6
100.0
100.0
100.0
I-95 SB at High Street
7AM-9AM
9AM-3PM
3PM-6PM
84.2
70.2
74.4
2.7
7.5
8.2
1.1
5.2
6.1
5.1
5.9
3.7
2.5
2.8
1.9
1.7
2.5
2.1
2.8
5.9
3.6
100.0
100.0
100.0
74.7
75.0
74.8
7.5
6.7
7.1
3.9
4.6
4.2
3.4
4.9
4.2
1.4
2.4
1.9
0.9
2.1
1.5
8.3
4.3
6.3
100.0
100.0
100.0
I-95 NB at High Street Total
I-95 SB at High Street Total
I-95 SB at High Street Total
I-95 NB at Sasco Creek Road
7AM-9AM
9AM-3PM
3PM-6PM
74.0
66.0
78.3
15.8
16.6
5.7
2.1
2.8
2.8
1.8
4.6
4.2
1.3
1.9
1.7
0.3
1.2
0.7
4.8
6.9
6.6
100.0
100.0
100.0
I-95 SB at Sasco Creek Road
7AM-9AM
9AM-3PM
3PM-6PM
81.6
58.9
62.1
6.3
11.3
18.0
1.3
6.2
8.2
5.6
8.8
4.4
2.7
2.7
1.4
0.4
2.8
1.3
2.1
9.3
4.6
100.0
100.0
100.0
73.3
62.3
67.8
11.5
13.5
12.5
2.7
6.6
4.6
3.8
6.8
5.3
1.7
2.2
1.9
0.8
2.0
1.4
6.3
6.7
6.5
100.0
100.0
100.0
I-95 NB at Sasco Creek Road Total
I-95 SB at Sasco Creek Road Total
I-95 SB at Sasco Creek Road Total
I-95 NB at James Street
7AM-9AM
9AM-3PM
3PM-6PM
14.0
29.5
54.0
68.0
39.8
23.6
9.1
9.1
3.1
1.2
3.5
3.5
0.4
1.7
1.4
0.2
1.6
1.3
7.1
14.8
13.0
100.0
100.0
100.0
I-95 SB at James Street
7AM-9AM
9AM-3PM
3PM-6PM
65.4
39.1
26.6
22.6
32.1
47.6
3.4
10.3
12.3
2.8
5.7
3.0
0.7
2.2
2.0
1.5
2.7
1.6
3.6
7.9
6.9
100.0
100.0
100.0
33.2
39.3
36.2
42.2
36.3
39.3
7.2
9.8
8.5
2.9
4.1
3.5
1.3
1.8
1.5
1.1
2.0
1.6
12.2
6.7
9.4
100.0
100.0
100.0
I-95 NB at James Street Total
I-95 SB at James Street Total
I-95 SB at James Street Total
23
February 26, 2014
Table 10
Percent of Traffic by State of Vehicle Registration
Manual Count
Location
Period
CT
NJ
MA
NH
NY
RI
Other
Total
CT-15 NB at Racebrook Road
7AM-9AM
9AM-3PM
3PM-6PM
92.2
80.7
89.2
4.2
6.0
2.3
1.5
3.7
1.5
0.9
4.8
3.9
0.1
0.1
0.2
0.1
0.9
0.5
1.0
3.8
2.2
100.0
100.0
100.0
CT-15 SB at Racebrook Road
7AM-9AM
9AM-3PM
3PM-6PM
83.8
70.5
69.8
3.4
7.6
9.3
2.8
6.5
7.4
5.6
8.5
7.7
0.5
1.5
1.1
0.5
1.3
0.9
3.4
4.1
3.7
100.0
100.0
100.0
87.0
72.8
79.9
4.0
7.5
5.7
2.3
6.1
4.2
3.6
7.6
5.6
0.2
1.2
0.7
0.6
1.0
0.8
2.5
3.8
3.1
100.0
100.0
100.0
CT-15 NB at Racebrook Road Total
CT-15 SB at Racebrook Road Total
CT-15 at Racebrook Road Total
CT-15 NB at Morehouse Road
7AM-9AM
9AM-3PM
3PM-6PM
79.2
71.3
80.1
11.0
11.6
7.4
5.3
7.4
4.2
1.9
4.5
4.8
0.4
0.8
0.9
0.4
1.0
0.7
1.7
3.4
2.0
100.0
100.0
100.0
CT-15 SB at Morehouse Road
7AM-9AM
9AM-3PM
3PM-6PM
91.1
75.3
65.3
2.9
8.5
16.9
0.8
5.0
8.6
2.6
5.3
3.6
0.6
0.7
1.1
0.3
1.0
1.3
1.7
4.2
3.2
100.0
100.0
100.0
CT-15 NB at Morehouse Road Total
CT-15 SB at Morehouse Road Total
CT-15 at Morehouse Road Total
76.3
72.9
74.6
9.6
11.2
10.4
5.7
6.0
5.8
4.3
4.4
4.3
0.8
0.8
0.8
0.8
1.0
0.9
2.6
3.6
3.1
100.0
100.0
100.0
CT-15 NB at Round Hill Road
7AM-9AM
9AM-3PM
3PM-6PM
25.7
44.5
69.2
61.7
33.0
18.2
8.3
9.3
4.6
0.9
4.3
3.0
0.3
0.5
0.9
0.1
0.8
0.5
3.0
7.5
3.5
100.0
100.0
100.0
CT-15 SB at Round Hill Road
7AM-9AM
9AM-3PM
3PM-6PM
82.6
58.5
39.1
13.9
25.7
37.7
1.1
6.5
12.9
0.6
4.9
4.5
0.3
0.9
1.0
0.1
0.6
1.0
1.4
2.9
3.8
100.0
100.0
100.0
52.2
56.1
54.2
31.3
27.8
29.5
7.1
7.8
7.4
3.2
3.9
3.5
0.7
0.8
0.7
0.6
0.6
0.6
5.0
2.9
4.0
100.0
100.0
100.0
CT-15 NB at Round Hill Road Total
CT-15 SB at Round Hill Road Total
CT-15 at Round Hill Road Total
24
February 26, 2014
Table 11
Vehicle Occupancy Percentages on I-95
Location
Period
Single
2 or More
Total
I-95 NB at High Street
7AM-9AM
9AM-3PM
3PM-6PM
Average
0.84
0.82
0.80
0.82
0.16
0.18
0.20
0.18
1.00
1.00
1.00
1.00
I-95 SB at High Street
7AM-9AM
9AM-3PM
3PM-6PM
Average
0.89
0.77
0.79
0.80
0.11
0.23
0.21
0.20
1.00
1.00
1.00
1.00
0.81
0.19
1.00
Daily NB & SB Average
I-95 NB at Sasco Creek Road
7AM-9AM
9AM-3PM
3PM-6PM
Average
0.88
0.86
0.85
0.86
0.12
0.14
0.15
0.14
1.00
1.00
1.00
1.00
I-95 SB at Sasco Creek Road
7AM-9AM
9AM-3PM
3PM-6PM
Average
0.89
0.84
0.78
0.82
0.11
0.16
0.22
0.18
1.00
1.00
1.00
1.00
0.84
0.16
1.00
I-95 NB at James Street
7AM-9AM
9AM-3PM
3PM-6PM
Average
0.89
0.79
0.76
0.80
0.11
0.21
0.24
0.20
1.00
1.00
1.00
1.00
I-95 SB at James Street
7AM-9AM
9AM-3PM
3PM-6PM
Average
0.89
0.79
0.77
0.80
0.11
0.21
0.23
0.20
1.00
1.00
1.00
1.00
0.80
0.20
1.00
25
February 26, 2014
Table 12
2008 Interstate Vehicle Occupancy Rates
Hour
Beginning
0:00
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
SOV
HOV 2
HOV 3+
Total
SOV
HOV 2
HOV 3+
Total
63
71
40
44
34
67
193
429
571
391
207
274
307
308
347
484
665
877
403
232
166
180
131
128
24
15
6
7
9
13
24
50
53
44
48
64
70
63
88
137
153
155
90
57
50
54
41
37
13
12
4
4
4
1
13
15
26
16
27
23
39
24
37
62
83
83
53
29
21
26
13
16
100
98
50
55
47
81
230
494
650
451
282
361
416
395
472
683
901
1,115
546
318
237
260
185
181
0.63
0.72
0.80
0.80
0.72
0.83
0.84
0.87
0.88
0.87
0.73
0.76
0.74
0.78
0.74
0.71
0.74
0.79
0.74
0.73
0.70
0.69
0.71
0.71
0.24
0.15
0.12
0.13
0.19
0.16
0.10
0.10
0.08
0.10
0.17
0.18
0.17
0.16
0.19
0.20
0.17
0.14
0.16
0.18
0.21
0.21
0.22
0.20
0.13
0.12
0.08
0.07
0.09
0.01
0.06
0.03
0.04
0.04
0.10
0.06
0.09
0.06
0.08
0.09
0.09
0.07
0.10
0.09
0.09
0.10
0.07
0.09
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
6,612
1,352
644
8,608
0.77
0.16
0.07
1.00
7AM-9AM
9AM-3PM
3PM-6PM
1,000
1,834
2,026
103
377
445
41
166
228
1,144
2,377
2,699
0.87
0.77
0.75
0.09
0.16
0.16
0.04
0.07
0.08
1.00
1.00
1.00
7AM-6PM
4,860
925
435
6,220
0.78
0.15
0.07
1.00
Source: CT DOT Bureau of Policy and Planning
Data collected across three Regional Planning Agencies: SWRPA, GBRC, and SCRCOG.
26
February 26, 2014
visual survey (7AM-6PM), the results are similar, with single occupant vehicles from the crash data
accounting for 78 percent of total traffic and 82 percent on average from the visual survey. A higher
occupancy level from crash statistics would be expected, as vehicles with more than one driver have a
higher propensity for accidents.
Truck Origin and Destination Survey
A commercial vehicle origin and destination survey was conducted in each travel direction at the
Fairfield and Milford Rest Areas off I-95 (Figure 57). A direct interview was conducted of commercial
vehicle drivers utilizing the survey instrument shown in Figure 58.
Table 13 displays summaries of trip purpose, EZ-Pass ownership, and trip frequency. Almost all of
the commercial vehicle drivers interviewed indicated they were on company business. 34-35 percent
of those surveyed at Station 1 and Station 2 in northbound direction completes this trip 4 or more
times per week, while this dropped to 24-25 percent for both station in the southbound direction. In
the northbound direction, 17-19 percent of commercial vehicles surveyed indicated they made the
trip 2 to 3 times per week. In the southbound direction this percent is higher with range of 23-24
percent. In general, 50 percent of those individuals interviewed make this trip at least twice per week.
EZ-Pass ownership levels were found to be significant, ranging between 65 and 77 percent.
Table 13
Truck Survey Summaries
Station 1 NB
98%
2%
0%
Trip Purpose
Station 1 SB
Station 2 NB
99%
98%
1%
2%
0%
0%
Station 2 SB
99%
1%
0%
Station 1 NB
4 or more per week
34%
2-3 per week
19%
1 per week
15%
1-3 per month
8%
Less than 1 per month
17%
No answer
7%
Trip Frequency
Station 1 SB
Station 2 NB
25%
35%
23%
17%
9%
12%
17%
10%
19%
9%
7%
17%
Station 2 SB
24%
24%
15%
13%
22%
1%
Station 1 NB
77%
6%
15%
2%
EZ Pass
Station 1 SB
Station 2 NB
67%
65%
28%
12%
0%
20%
5%
3%
Station 2 SB
72%
27%
1%
0%
Company Business
Personal Business
To/From work
Yes
No
Plan to acquire
No answer
27
February 26, 2014
X:\TFT Group\Projects\CT 96725 I-95 Value Pricing Study\Graphics\I-95 Corridor Congestion Relief Study\Arcview\I-95 Truck Survey Locations.mxd \ 2/26/14
New Fairfield
N
Naugatuck
Southbury
Brookfield
Beacon Falls
84
Danbury
Oxford
Ansonia
Monroe
New York
Easton
Trumbull
25
8
Fairfield
New Canaan
15
Darien
Greenwich
1
95
Westport
Norwalk
Stamford
15
Bridgeport
Guilford
North Haven
North Branford
15
New Haven
Orange
1
East Haven
West Haven
Branford
95
1
Milford
Weston
Wilton
Durham
91
Shelton
Fairfield
7
Woodbridge
Derby
Redding
Ridgefield
91
Hamden
Seymour
Bethel
Wallingford
Bethany
8
Newtown
84
Cheshire
Station 2
Milford I-95 Rest Area
Stratford
95
1
Station 1
Fairfield I-95 Rest Area
Long Island Sound
I-95 TRUCK SURVEY LOCATIONS
FIGURE 57
Commercial Vehicle Origin-Destination Survey
Date
5
6
If you did not use I-95
for this trip today,
which road would you
use?
E
7
8
9
10
11
12
13
A
B
C
Code
D
14
Vehicle Occupancy
C
Single trailer
B
Vehicle Class
Alternate Route
Multi-trailer
A
Year
Single unit
C
1-3 per month
Personal business
B
Code
Company business
A
(Interchange Number,
Route Number or
Nearest Town & State)
Number of axles
4
(Interchange Number,
Route Number or
Nearest Town & State)
State of vehicle registration
3
Month
What is your home state?
2
Less than one per month
- Street Address
- City / Town
- State, Zip Code
- Other explanation (e.g. nearest intersection,
airport, mall, etc.)
Day
Where do you plan
to exit I-95?
Code
1
Min.
To / from work
Hr.
Page No. ______
Where did you enter
I-95 for this trip?
Trip Frequency
1 per week
- Street Address
- City / Town
- State, Zip Code
- Other explanation (e.g. nearest intersection,
airport, mall, etc.)
Trip Purpose
Time
2-3 per week
Where did this trip begin in this direction?
Where will this trip end (in this direction)?
(Should not be the same answer as to Question 3)
Surveyor __________________________________________________________
4 or more per week
Station Name _____________________________________________________________
Do you have an E-Z Pass transponder?
1. Yes
2. No
3. Plan to acquire
Station No.
15
ORIGIN - DESTINATION SURVEY FORM
FIGURE 58
A tremendous spread of vehicle registrations and home states were identified by those surveyed
(Table 14). In the northbound direction, Connecticut was identified as the highest percentage of
vehicle registrations at Station 1 (34%), while Massachusetts (32%) was the most identified
registration at Station 2. At Station 1 and Station 2 in the southbound direction, trucks registered in
New Jersey had the highest percent of 22 and 27 percent for Station 1 and Station 2, respectively.
Table 14
Truck Survey Summaries
Home State
CT
RI
NJ
NY
PA
MA
IL
IN
MO
NC
TN
TX
FL
Other
Station 1 NB
Station 1 SB
Station 2 NB
Station 2 SB
35%
2%
11%
15%
2%
14%
1%
0%
1%
1%
2%
1%
1%
13%
21%
1%
20%
16%
9%
2%
3%
0%
3%
2%
4%
2%
3%
12%
19%
10%
11%
13%
4%
25%
1%
1%
0%
0%
0%
3%
1%
11%
17%
0%
24%
19%
10%
9%
1%
1%
1%
2%
2%
2%
2%
10%
CT
RI
NJ
NY
PA
MA
IL
IN
MO
NC
TN
TX
FL
Other
Station 1 NB
Station 1 SB
Station 2 NB
Station 2 SB
34%
0%
10%
10%
3%
8%
2%
5%
1%
2%
4%
2%
2%
15%
21%
0%
22%
14%
5%
4%
4%
5%
0%
1%
5%
4%
2%
14%
18%
9%
18%
9%
3%
32%
2%
8%
0%
0%
0%
2%
0%
0%
14%
0%
27%
15%
8%
8%
3%
5%
1%
3%
1%
2%
1%
14%
28
February 26, 2014
Appendix
I-95 / MERRITT PARKWAY DENSITY SURVEY
APRIL 2013
Prepared for the Connecticut Department of Transportation
By Skycomp, Inc.
in association with CD Smith
TABLE OF CONTENTS
Survey Area..................................................................................................................................ii
Introduction and Methodology………........................................................................................…1
Part I: I-95.....................................................................................................................................3
I-95 AM Data ...............................................................................................................4
Density .................................................................................................................4
Level-of-Service ...................................................................................................9
Mainline Bottlenecks .........................................................................................14
Ramp and Side Road Queues ..........................................................................15
I-95 PM Data .............................................................................................................16
Density ...............................................................................................................16
Level-of-Service .................................................................................................21
Part II: Merritt Pkwy.....................................................................................................................29
Merritt Pkwy AM Data ...............................................................................................30
Density ...............................................................................................................30
Level-of-Service .................................................................................................35
Merritt Pkwy PM Data ...............................................................................................42
Density ...............................................................................................................42
Level-of-Service .................................................................................................47
i
SURVEY AREA
I-95 & Merritt Parkway
New
Haven
34
Merritt Pkwy
Stratford
15
Stamford
Merritt
Pkwy
95
287
Greenwich
C
N
ew
on
ne
ct
Yo
r
k
ii
ic
ut
95
Introduction
In April 2013, Skycomp acquired overlapping aerial photography of I-95 and Merritt Parkway for the purpose of obtaining traffic densities. Using a
fixed winged aircraft, Skycomp documented traffic conditions during 3-hour morning and evening peak periods over the course of four days.
Survey Area
As shown in the graphic on opposite page, the survey limits for each highway were between I-287 to the south and SR 34 in New Haven to the
north.
Survey Schedule
Skycomp conducted four morning survey flights and four evening flights. The on-station
times were 6:30-9:30 a.m. and 4:00-7:00 p.m., restricted to Tuesdays, Wednesdays and Thursdays. The sample interval was 60 minutes, resulting
in an average of three samples of all highway miles during each flight (12 morning and 12 evening passes total).
Methodology - Densities
After survey flights were completed, all photographs were sorted by highway and by time period. A segmentation “guidebook” was then assembled
for each highway to guide data reduction. From the overlapping time-stamped photographs, densities by highway segment were determined
by manual counts taken along the entire segment length. Vehicles were classified as cars, trucks, buses, or tractor-trailers when counted; later,
passenger-car equivalents (PCE’s) were derived according to the following table:
Vehicle type: PCE’s:
Cars 1.0
Buses 1.5
Trucks 1.5
Tractor-trailers 2.0
Data that were atypical due to roadwork or to known or suspected incidents were coded for exclusion from the averaging process. All data were
then entered into the density database (Microsoft Access), which performed the following tasks: 1) samples were grouped by time slice (30
minutes); 2) average densities were calculated (typically two observations per 30 minute period); and 3) densities were converted into service levels
“A” through “F”. The computer then prepared matrices showing each averaged service level rating plotted by time and highway segment. These
data matrices were then copied into Density and Level-of-Service tables.
Methodology – Bottlenecks Database
In addition to density and level-of-service tables, Skycomp produced a “bottlenecks” database for I-95 and Merritt Parkway. During the analysis
stage, all locations on the ramps and mainlines that generated persistent queuing were listed in each database. The location of the head of each
queue, the approximate queue length, and apparent underlying cause, where evident, were included.
1
Highlight Aerial Photography
For each congested zone or interchange in the bottlenecks database, highlight digital photographs (drawn from the photo sets used for data
reduction) were selected that illustrate typical conditions found. These photographs have been grouped by bottleneck number and delivered in a
suitable viewing format (jAlbum).
Deliverables
1. Density Database: All data associated with densities in a Microsoft Access database.
2. Density and Level-of-Service Tables: Average density and level-of-service tables are provided in this report.
3. Bottlenecks Database: A list of all mainline bottlenecks to include the location of the head of the queue, the approximate queue length, and
apparent underlying cause where evident.
4. Ramp and side road queues: A list of locations where queuing was found on the entrance and exit ramps as well as roads crossing the
surveyed highway.
5. Archive of Highlight Aerial Photography: For each congested zone in the bottlenecks database, highlight digital photographs illustrate typical
conditions found; these photographs are grouped by bottleneck number and assembled in a jAlbum catalog for viewing.
Questions
If there are any questions about this survey effort, the findings or the underlying methodology, please direct them to Greg Jordan at 410-884-6900,
ext. 33, or to [email protected].
2
Part I: I-95
3
MORNING DENSITY (I-95)
I-95
(Between I-287 & US 1/Boston Post Rd)
Density
Morning (April, 2013)
SOUTHBOUND
Time
Density
21
2
Density
3
Density
4
Density
5
Density
6
Density
7
Density
8
9
21
7:00-7:30
17
19
21
23
24
33
16
25
7:30-8:00
21
26
25
21
20
27
37
30
28
37
34
43
8:00-8:30
20
49
8:30-9:00
20
21
39
44
43
45
9:00-9:30
17
17
44
25
31
6:30-7:00
24
21
23
20
7:00-7:30
21
22
18
22
7:30-8:00
25
79
Elm St
26
Washington Blvd
27
West Ave
23
E Putnam Ave
20
Indian Field Rd
21
Arch St
18
Delavan Ave
15
I-287
6:30-7:00
42
35
29
36
38
28
23
20
11
21
20
20
14
21
17
26
US 1 (Boston Post Rd)
Density
I-95
50
9:00-9:30
21
49
2
42
50
3
43
4
4
Density
< 31 pcplpm
31-40
41-62
> 62
39
31
5
NORTHBOUND
Colors
(white)
29
39
6
17
Elm St
39
22
18
26
7
28
32
32
36
Washington Blvd
47
44
27
West Ave
63
35
28
E Putnam Ave
8:30-9:00
42
24
Indian Field Rd
43
27
Arch St
8:00-8:30
Delavan Ave
I-287
Time
19
8
9
I-95
(Between US 1/Boston Post Rd & SR 476/Sherwood Connector)
Density
SOUTHBOUND
9:00-9:30
35
32
31
31
33
36
43
32
30
34
51
49
16
Density
17
18
31
44
47
33
35
33
59
69
39
41
58
92
57
53
72
72
Saugatuck Ave
30
34
15
Density
East Ave
26
30
14
Density
US 7
25
13
Density
58
64
94
85
59
72
96
74
98
34
36
32
35
36
54
41
56
67
70
85
14
20
17
12
16
18
13
17
14
19
17
20
11
12
17
16
23
26
SR 476 (Sherwood Connector)
8:30-9:00
28
12
Density
South Norwalk
8:00-8:30
11
Density
7:30-8:00
Density
SR 136 (Tokeneke Rd)
7:00-7:30
10
Noroton Ave
6:30-7:00
9
Time
Density
Density
I-95
11
23
20
9:00-9:30
9
32
10
25
21
11
31
19
12
33
49
44
13
US 7
17
23
20
23
12
14
23
28
19
15
26
Saugatuck Ave
34
26
East Ave
32
24
South Norwalk
23
33
21
21
20
16
14
18
17
8:30-9:00
25
22
21
8:00-8:30
19
24
7:30-8:00
7:00-7:30
Noroton Ave
6:30-7:00
Time
18
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
5
I-95
(Between SR 476 & Connecticut Ave)
Density
SOUTHBOUND
9:00-9:30
44
39
44
53
49
70
74
73
45
75
56
80
59
88
82
82
76
69
77
40
53
87
96
75
78
62
83
93
15
7
4
12
16
19
18
12
96
90
75
27
Density
28
29
62
108
79
85
47
87
129
95
75
74
86
49
106
115
107
99
86
72
86
53
60
98
66
65
52
83
70
80
42
26
35
16
12
9
13
14
10
23
10
14
12
13
17
14
22
Connecticut Ave
46
26
Density
Stratford Ave
39
25
Density
SR 8 / SR 25
38
24
Density
Wordin Ave
38
23
Density
Fairfield Ave
22
Density
US 1 (Kings Hwy)
8:30-9:00
21
Density
Meadowbrook Rd
8:00-8:30
20
Density
Mill Plan Rd
7:30-8:00
Density
Bronson Rd
7:00-7:30
19
US 1 (Post Rd)
6:30-7:00
18
Time
Density
SR 135 (Benson Rd)
Density
I-95
9:00-9:30
18
16
18
23
19
26
29
20
11
21
32
13
22
6
28
18
23
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
18
15
13
24
14
25
19
9
25
20
15
15
25
26
15
Stratford Ave
13
19
SR 8 / SR 25
21
20
Wordin Ave
17
21
Fairfield Ave
17
24
20
23
15
27
26
Connecticut Ave
22
19
26
US 1 (Kings Hwy)
18
18
21
Meadowbrook Rd
8:30-9:00
21
14
SR 135 (Benson Rd)
8:00-8:30
19
Mill Plan Rd
7:30-8:00
Bronson Rd
7:00-7:30
US 1 (Post Rd)
6:30-7:00
Time
17
28
29
I-95
(Between Connecticut Ave & Milford Pkwy)
Density
SOUTHBOUND
32
21
27
22
20
25
20
20
17
47
54
29
26
27
21
25
19
41
39
21
20
17
17
13
20
6:30-7:00
21
17
10
7:00-7:30
14
13
10
8:30-9:00
9:00-9:30
39
34
35
Density
36
38
16
20
23
24
19
27
21
25
30
22
31
22
13
27
22
19
26
17
18
17
12
13
15
17
16
17
14
12
17
Milford Pkwy
8:00-8:30
45
33
Density
Plains Rd
7:30-8:00
32
Density
Schoolhouse Rd
22
Density
Ferry Blvd
7:00-7:30
31
Density
Broad St
20
Connecticut Ave
6:30-7:00
Density
US 1 (Bridgeport Ave)
30
SR 113 (Hollister Ave)
29
Density
Honeyspot Rd
Density
Time
I-95
19
18
9:00-9:30
29
13
17
18
30
13
16
13
32
33
15
12
14
16
12
34
25
12
20
12
35
21
Milford Pkwy
19
24
Plains Rd
21
Schoolhouse Rd
22
21
8
31
20
Ferry Blvd
16
Broad St
17
28
8:30-9:00
21
21
Honeyspot Rd
8:00-8:30
22
7:30-8:00
Connecticut Ave
Time
12
36
38
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
7
I-95
(Between Milford Pkwy & SR 34)
Density
SOUTHBOUND
7:30-8:00
8:00-8:30
33
29
8:30-9:00
28
9:00-9:30
22
43
45
22
18
21
25
28
24
22
22
25
24
21
21
21
25
26
24
29
23
Density
35
23
28
20
23
21
25
20
20
23
19
23
47
26
28
28
SR 34
24
42
Density
1st Ave
7:00-7:30
41
Density
Sawmill Rd
23
Milford Pkwy
6:30-7:00
40
Density
SR 10 (Ella T Grasso Blvd)
39
Density
Marsh Hill Rd
38
Time
Density
Woodmont Rd
Density
28
27
22
I-95
I-95
26
8:30-9:00
21
9:00-9:30
38
21
19
24
44
29
30
25
18
22
21
17
39
25
33
22
14
40
31
8
Density
< 31 pcplpm
31-40
41-62
> 62
44
46
21
21
42
NORTHBOUND
Colors
(white)
54
42
19
41
44
20
43
25
31
35
SR 34
25
15
8:00-8:30
32
30
1st Ave
7:30-8:00
17
Sawmill Rd
20
22
Marsh Hill Rd
7:00-7:30
15
Woodmont Rd
15
Milford Pkwy
6:30-7:00
Time
29
18
45
47
I-95
Level-of-Service
SOUTHBOUND
Time
LOS
21
2
LOS
3
LOS
4
LOS
5
LOS
6
LOS
7
LOS
8
9
C
7:00-7:30
B
C
C
C
C
D
B
C
7:30-8:00
C
C
C
C
C
D
E
D
D
E
D
E
8:00-8:30
C
F
8:30-9:00
C
C
E
E
E
E
9:00-9:30
B
B
E
C
D
6:30-7:00
C
C
C
C
7:00-7:30
C
C
B
C
7:30-8:00
C
F
Elm St
C
Washington Blvd
D
West Ave
C
E Putnam Ave
C
Indian Field Rd
C
Arch St
B
Delavan Ave
B
I-287
6:30-7:00
E
D
D
E
E
D
C
C
A
C
C
C
B
C
B
C
LOS
I-95
F
9:00-9:30
21
F
2
E
F
3
D
E
4
E
D
5
E
6
B
Elm St
E
C
B
C
7
D
D
D
E
Washington Blvd
F
E
D
West Ave
F
D
D
E Putnam Ave
8:30-9:00
E
C
Indian Field Rd
E
D
Arch St
8:00-8:30
Delavan Ave
I-287
Time
C
8
9
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
9
MORNING LEVEL-OF-SERVICE (I-95)
I-95
Level-of-Service
SOUTHBOUND
9:00-9:30
D
D
D
D
D
E
E
D
D
D
F
F
15
16
LOS
17
18
D
E
F
D
D
D
F
F
E
E
F
F
F
F
F
F
Saugatuck Ave
D
D
14
LOS
East Ave
C
D
13
LOS
US 7
C
12
LOS
F
F
F
F
F
F
F
F
F
D
E
D
D
E
F
E
F
F
F
F
B
C
B
B
B
B
B
B
B
C
B
C
A
B
B
B
C
C
8:30-9:00
D
LOS
South Norwalk
8:00-8:30
11
LOS
7:30-8:00
LOS
7:00-7:30
10
Noroton Ave
6:30-7:00
9
Time
LOS
LOS
I-95
A
C
C
9:00-9:30
9
D
10
C
C
11
D
C
12
D
F
E
13
C
C
C
B
14
NORTHBOUND
Colors
(white)
10
LOS
A/B/C/D
D/E
E/F
F
US 7
B
Density
< 31 pcplpm
31-40
41-62
> 62
C
D
C
15
C
Saugatuck Ave
D
C
East Ave
D
C
South Norwalk
C
D
C
C
C
16
B
B
17
8:30-9:00
C
C
C
8:00-8:30
C
C
7:30-8:00
7:00-7:30
Noroton Ave
6:30-7:00
Time
18
I-95
(Between SR 476/Sherwood Connector & Connecticut Ave)
Level-of-Service
SOUTHBOUND
9:00-9:30
E
E
E
F
F
F
F
F
E
F
F
F
F
F
F
F
F
F
F
E
F
F
F
F
F
F
F
F
B
A
A
B
B
C
B
B
F
F
F
27
LOS
28
29
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
E
C
D
B
B
A
B
B
A
C
A
B
B
B
B
B
C
Connecticut Ave
F
26
LOS
Stratford Ave
E
25
LOS
SR 8 / SR 25
E
24
LOS
Wordin Ave
E
23
LOS
Fairfield Ave
22
LOS
US 1 (Kings Hwy)
8:30-9:00
21
LOS
Meadowbrook Rd
8:00-8:30
20
LOS
Mill Plan Rd
7:30-8:00
LOS
Bronson Rd
7:00-7:30
19
US 1 (Post Rd)
6:30-7:00
18
Time
LOS
SR 135 (Benson Rd)
LOS
I-95
9:00-9:30
18
B
B
C
19
C
D
20
A
21
D
B
22
D
B
23
B
B
B
24
B
C
C
A
25
C
B
B
C
26
B
Stratford Ave
B
C
SR 8 / SR 25
C
C
Wordin Ave
B
C
Fairfield Ave
B
C
C
C
B
27
C
Connecticut Ave
C
C
C
US 1 (Kings Hwy)
B
B
C
Meadowbrook Rd
8:30-9:00
C
B
SR 135 (Benson Rd)
8:00-8:30
C
Mill Plan Rd
7:30-8:00
Bronson Rd
7:00-7:30
US 1 (Post Rd)
6:30-7:00
Time
B
28
29
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
11
I-95
Level-of-Service
SOUTHBOUND
8:00-8:30
E
D
D
C
C
C
C
C
B
F
F
D
C
D
C
C
C
E
E
C
C
B
B
B
C
6:30-7:00
C
B
A
7:00-7:30
B
B
A
8:30-9:00
9:00-9:30
E
C
35
LOS
36
38
B
C
C
C
C
D
C
C
D
C
D
C
B
D
C
C
C
B
B
B
B
B
B
B
B
B
B
B
B
Milford Pkwy
7:30-8:00
34
LOS
Plains Rd
C
33
LOS
Schoolhouse Rd
7:00-7:30
32
LOS
Ferry Blvd
C
Connecticut Ave
6:30-7:00
31
LOS
30
LOS
Broad St
29
Time
LOS
Honeyspot Rd
LOS
I-95
C
B
9:00-9:30
29
B
C
A
31
B
33
12
LOS
A/B/C/D
D/E
E/F
F
B
Density
< 31 pcplpm
31-40
41-62
> 62
C
B
B
B
C
B
35
C
Milford Pkwy
B
B
34
NORTHBOUND
Colors
(white)
C
Plains Rd
C
B
B
32
C
Schoolhouse Rd
C
Ferry Blvd
C
B
B
30
B
Broad St
B
D
8:30-9:00
C
C
Honeyspot Rd
8:00-8:30
C
7:30-8:00
Connecticut Ave
Time
B
36
38
I-95
C
7:30-8:00
8:00-8:30
D
D
8:30-9:00
D
9:00-9:30
C
42
SOUTHBOUND
LOS
43
B
C
C
D
C
C
C
C
C
C
C
C
C
C
C
D
C
LOS
45
C
1st Ave
7:00-7:30
41
LOS
Sawmill Rd
C
Milford Pkwy
6:30-7:00
40
LOS
D
C
D
C
C
C
C
C
C
C
C
C
47
C
D
D
SR 34
39
LOS
Marsh Hill Rd
38
Time
LOS
Woodmont Rd
LOS
Level-of-Service
D
D
C
I-95
I-95
C
8:30-9:00
C
9:00-9:30
38
C
C
C
E
D
D
C
B
C
C
B
39
C
D
C
B
40
D
F
E
C
41
E
F
C
C
42
E
C
43
A
C
D
D
SR 34
C
B
8:00-8:30
D
D
1st Ave
7:30-8:00
B
Sawmill Rd
C
C
Marsh Hill Rd
7:00-7:30
B
Woodmont Rd
B
Milford Pkwy
6:30-7:00
Time
D
B
45
47
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
13
MAINLINE BOTTLENECKS (I-95 MORNING)





Bottleneck
#
Queue
Direction Type
Head of Queue
(Lat/Long)
Head of Queue Location
Tail of Queue Location
Time Period
Queue
Length
Contributing factors to congestion
Photos
1
SB
Mainline
41 08 36 / 73 16 03
Int. 21 (Mill Plan Rd)
Int. 29 (Connecticut Ave)
6:30-9:30 a.m.
5-6 miles
Weaving/merging at the series of interchanges along this
section of I-95
I-95_AM_1
2
SB
Mainline
41 06 22 / 73 25 27
Int. 15 (US 7)
Int. 21 (Mill Plan Rd)
7:00-9:30 a.m.
8-9 miles
section of I-95. Bridges/narrow shoulders.
I-95_AM_2
3
SB
Mainline
41 04 26 / 73 28 13
Int. 12 (SR 136 - Tokeneke Rd)
Int. 15 (US 7)
7:30-9:30 a.m.
3-4 miles
section of I-95
I-95_AM_3
4
SB
Mainline
41 02 43 / 73 32 60
Int. 6 (West Ave)
Int. 8 (Elm St)
7:30-9:30 a.m.
1-2 miles
The primary cause of congestion was traffic entering at Int.
7 (Washington Blvd)
I-95_AM_4
5
SB
Mainline
41 01 13 / 73 37 28
Int. 3 (Arch St)
Int. 5 (E Putnam Ave)
8:00-9:30 a.m.
1-3 miles
Traffic exiting at Arch St backing into the right lane on I-95 I-95_AM_5
6
SB
Mainline
41 10 31 / 73 09 53
Int. 30 (Hollister Ave)
Int. 32 (Broad St)
7:30-9:00 a.m.
1-2 miles
Traffic entering at Honeyspot Rd and Hollister Ave
I-95_AM_6
7
NB
Mainline
41 02 27 / 73 34 42
Int. 21 (I-287)
8:00-9:30 a.m.
4-6 miles
Traffic entering at the series of interchanges along this
section of I-95
I-95_AM_8
8
NB
Mainline
41 06 20 / 73 25 31
Int. 14 (South Norwalk)
Int. 13 (US 1 - Boston Post Rd) 8:30-9:30 a.m.
1-2 miles
Construction at the South Norwalk interchanges
I-95_AM_7
9
NB
Mainline
41 17 03 / 72 56 01
Int. 45 (SR 10 / Ella T Grasso Blvd)
Int. 42 (Sawmill Rd)
2-3 miles
Traffic entering at 1st Ave and weaving/merging at the
closely spaced interchanges at SR 122 and SR 10
I-95_AM_9
14
7:00-9:00 a.m.)
RAMP AND SIDE ROAD QUEUES (I-95 MORNING)
Highway
AM / PM Queue #
Interchange
Ramp / Side Road
Direction
Head of Queue
(Lat/Long)
Time
Queue Population
(vehicles per lane)
Frequency
Notes
I-95
AM
1
Int. 3 (Arch St)
Exit ramp
SB
41 01 12.6 / 73 37 35.4
8:00-9:00 a.m.
20-30 vpl (2 lanes)
Intermittent
The head of the queue was found at the signal at the head of the ramp (2 dedicated right-turn lanes) I-95 Ramps AM_1
I-95
AM
2
Int. 15 (US 7)
Entrance ramp
SB
41 06 22.3 / 73 25 27.3
7:00-9:00 a.m.
50-80 vpl (1 lane)
Intermittent
The head of the queue was found where vehicles waited to merge onto the Parkway
I-95 Ramps AM_2
I-95
AM
3
Int. 27 (SR 8 / SR 25)
Entrance ramp
SB
41 10 14.2 / 73 11 39.9
7:00-9:00 a.m.
30-50 vpl (1 lane)
Intermittent
The head of the queue was found where vehicles waited to merge onto I-95
I-95 Ramps AM_3
I-95 Ramps AM_4
Photos
I-95
AM
4
Int. 21 (I-287)
Entrance ramp
NB
40 59 26.4 / 73 39 47.9
8:59 a.m.
90-100 vpl (2 lanes)
One time
The head of the queue was found where vehicles waited to merge onto I-95 (possibly atypical
congestion)
I-95
PM
1
Int. 27 (SR 8 / SR 25)
Exit ramp
NB
41 10 16.4 / 73 11 29.4
4:15-6:45 p.m.
40-60 vpl (1 lane)
Intermittent
Congestion apperared to be caused by the geometrics of the ramp
I-95 Ramps PM-1
I-95
PM
2
Int. 6 (West Ave)
Entrance ramp
NB
41 02 39.0 / 73 33 13.9
5:00-6:00 p.m.
20-25 vpl (1 lane)
Intermittent
I-95 Ramps PM-2
I-95
PM
3
Int. 7 (Atlantic St)
Entrance ramp
SB
41 02 49.8 / 73 32 37.4
5:31 p.m.
20-25 vpl (1 lane)
One time
I-95 Ramps PM-3
I-95
PM
4
Entrance ramp
NB
41 06 11.5 / 73 25 53.3
5:00-6:00 p.m.
25-30 vpl (1 lane)
Intermittent
I-95 Ramps PM-4
I-95
PM
5
Int. 24 (US 1 / Kings Hwy)
Exit ramp
NB
41 09 52.3 / 73 14 09.6
5:00-7:00 p.m.
25-30 vpl (2 lanes)
Intermittent
The head of the queue was found at the signal at the head of the ramp
I-95 Ramps PM-5
I-95
PM
6
Int. 15 (US 7)
Entrance ramp
NB
41 06 23.3 / 73 25 05.8
5:30-6:30 p.m.
30-60 vpl (1 lane)
Intermittent
I-95 Ramps PM-6
Merritt Pkwy
AM
1
Int. 35 (SR 137 / High Ridge Rd)
Exit ramp
SB
41 06 45.2 / 73 32 47.2
8:45 a.m.
30-35 vpl (2 lanes)
One time
The head of the queue was found at the signal at High Ridge Rd
Merritt Ramps AM_1
Merritt Pkwy
AM
2
High Ridge Rd
WB
41 06 45.0 / 73 32 46.6
8:00-8:30 a.m.
50-60 vpl (2 lanes)
Intermittent
During one observation, congestion extended back through several upstream signals
Merritt Ramps AM_2
Merritt Pkwy
AM
3
Int. 34 (SR 104 / Long Ridge Rd)
Entrance ramp
SB
41 06 12.4 / 73 33 55.6
7:45-8:15 a.m.
20-25 vpl (1 lane)
Intermittent
Merritt Ramps AM_3
Merritt Pkwy
AM
4
Int. 36 (Old Stamford Rd)
Old Stamford Rd
WB
41 07 07.3 / 73 29 56.1
7:30-8:30 a.m.
50-60 vpl (1 lane)
Intermittent
The head of the queue was found west of the Parkway interchange at the signal at Jelliff Mill Rd
Merritt Ramps AM_4
Merritt Ramps AM_5
Merritt Pkwy
AM
5
Int. 44 (Black Rock Turnpike)
Entrance ramp
SB
41 12 04.2 / 73 16 18.9
7:00-8:00 a.m.
50-100 vpl (1 lane)
Intermittent
The head of the queue was found where vehicles waited to merge onto the Parkway; congestion
extended back through the signal at Black Rock Pkwy
Merritt Pkwy
AM
6
Black Rock Tnpk
WB
41 12 08.2 / 73 16 08.7
7:30-8:30 a.m.
25-30 vpl (1 lane)
Intermittent
The head of the queue was found at the signal at the northbound ramp
Merritt Ramps AM_6
Merritt Pkwy
AM
7
Int. 54 (Milford Parkway)
Entrance ramp
SB
41 14 56.0 / 73 04 48.2
7:30-8:00 a.m.
50-70 vpl (1 lane)
Intermittent
Merritt Ramps AM_7
Merritt Pkwy
PM
1
Entrance ramp
NB
41 06 50.0 / 73 32 28.5
5:00-6:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_1
Merritt Pkwy
PM
2
Int. 36 (SR 106 / Old Stamford Rd)
Old Stamford Rd
WB
41 07 00.2 / 73 29 58.1
5:00-6:00 p.m.
30-50 vpl (1 lane)
Intermittent
The head of the queue was found at the Parkway ramps (no signal)
Merritt Ramps PM_2
Merritt Pkwy
PM
3
Int. 38 (SR 123 / New Canaan Ave)
New Canaan Ave
EB
41 08 02.6 / 73 27 31.9
5:00-6:00 p.m.
20-30 vpl (1 lane)
Intermittent
The head of the queue was found at the signal at the Parkway ramps
Merritt Ramps PM_3
Merritt Pkwy
PM
4
Int. 41 (SR 33 / Willow Rd)
Willow Rd
WB
41 09 53.5 / 73 22 39.3
4:00-6:00 p.m.
20-40 vpl (1 lane)
Intermittent
Merritt Ramps PM_4
Merritt Pkwy
PM
5
Entrance ramp
NB
41 09 49.5 / 73 22 54.3
4:00-5:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_5
Merritt Pkwy
PM
6
Int. 42 (SR 57 / Weston Rd)
Weston Rd
WB
41 09 46.0 / 73 21 25.6
5:41 p.m.
25-30 vpl (1 lane)
One time
Merritt Ramps PM_6
One time
The head of the queue was found where vehicles waited to merge onto the Parkway (congestion
may have been atypical)
Merritt Ramps PM_7
Merritt Pkwy
PM
7
Int. 52 (SR 8)
Entrance ramp
NB
41 14 16.3 / 73 09 35.8
4:33 p.m.
70-75 vpl (1 lane)
15
EVENING DENSITY (I-95)
I-95
Density
Evening (April, 2013)
SOUTHBOUND
Density
21
2
Density
3
Density
4
Density
5
Density
6
Density
7
Density
8
9
24
4:30-5:00
25
25
26
26
25
29
16
19
5:00-5:30
28
17
27
33
40
29
49
26
41
28
42
33
5:30-6:00
39
57
6:00-6:30
34
46
35
33
55
67
6:30-7:00
32
40
39
32
34
4:00-4:30
13
15
21
33
4:30-5:00
22
22
25
23
5:00-5:30
18
42
Elm St
24
Washington Blvd
28
West Ave
24
E Putnam Ave
22
Indian Field Rd
23
Arch St
24
Delavan Ave
17
I-287
4:00-4:30
21
39
11
39
19
19
49
85
79
64
36
45
34
47
50
94
Density
Time
I-95
18
6:30-7:00
21
19
2
30
3
49
4
16
Density
< 31 pcplpm
31-40
41-62
> 62
98
86
5
NORTHBOUND
Colors
(white)
68
98
6
112
131
98
7
77
76
73
94
Elm StElm St
47
69
78
Washington Blvd
19
49
76
West Ave
23
33
41
E Putnam Ave
6:00-6:30
19
23
Indian Field Rd
20
21
Arch St
Arch St
5:30-6:00
Delavan Ave
I-287
Time
78
8
9
I-95
Density
SOUTHBOUND
6:30-7:00
19
24
24
29
28
24
21
25
23
33
28
21
16
Density
17
18
28
55
72
17
20
22
53
53
32
19
32
26
28
25
21
24
Saugatuck Ave
27
32
15
Density
East Ave
26
25
14
Density
US 7
25
13
Density
19
39
27
30
26
25
20
20
18
21
29
23
23
22
25
20
27
15
20
19
57
70
75
57
76
33
57
56
51
54
73
73
52
70
55
70
71
77
6:00-6:30
24
12
Density
South Norwalk
5:30-6:00
11
Density
5:00-5:30
Density
4:30-5:00
10
Noroton Ave
4:00-4:30
9
Time
Density
Density
I-95
89
53
6:30-7:00
9
84
10
888
85
11
100
57
12
92
92
64
13
88
65
26
14
76
33
15
63
77
Saugatuck Ave
102
US 7 US 7
85
94
South Norwalk
107
80
49
63
74
42
16
64
36
17
49
102
85
East Ave
East Ave
6:00-6:30
63
68
70
5:30-6:00
72
84
5:00-5:30
4:30-5:00
Noroton Ave
4:00-4:30
Time
18
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
17
I-95
(Between SR 476 & Connecticut Ave)
Density
SOUTHBOUND
6:30-7:00
18
19
16
20
18
19
26
20
16
18
19
25
24
23
18
23
29
22
16
20
24
16
24
18
14
20
17
18
57
53
59
59
60
68
49
57
23
24
22
27
Density
28
29
23
33
20
26
30
21
21
21
24
29
28
24
30
21
21
23
28
19
28
22
27
26
18
15
34
18
19
19
21
14
22
58
35
34
46
72
18
32
63
44
41
33
72
21
33
Connecticut Ave
23
26
Density
Stratford Ave
21
25
Density
SR 8 / SR 25
18
24
Density
Wordin Ave
21
23
Density
Fairfield Ave
22
Density
US 1 (Kings Hwy)
6:00-6:30
21
Density
Meadowbrook Rd
5:30-6:00
20
Density
Mill Plan Rd
5:00-5:30
Density
Bronson Rd
4:30-5:00
19
US 1 (Post Rd)
4:00-4:30
18
Time
Density
SR 135 (Benson Rd)
Density
I-95
6:30-7:00
18
51
40
29
19
47
28
20
38
21
43
40
22
18
43
38
23
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
26
33
20
24
31
46
65
20
25
34
16
22
47
26
24
Stratford Ave
35
26
SR 8 / SR 25
35
44
Wordin Ave
57
56
Fairfield Ave
58
74
31
26
16
27
42
Connecticut Ave
48
57
65
US 1 (Kings Hwy)
51
61
71
Meadowbrook Rd
6:00-6:30
60
64
SR 135 (Benson Rd)
5:30-6:00
58
Mill Plan Rd
5:00-5:30
Bronson Rd
4:30-5:00
US 1 (Post Rd)
4:00-4:30
Time
29
28
29
I-95
Density
SOUTHBOUND
5:30-6:00
23
18
16
18
29
18
24
20
24
21
24
20
22
22
22
26
25
17
17
28
26
17
10
16
16
17
4:00-4:30
29
27
28
4:30-5:00
27
30
30
6:00-6:30
6:30-7:00
22
34
35
Density
36
38
21
19
24
19
26
28
25
17
24
24
27
23
22
14
16
16
14
16
18
30
20
12
17
21
31
22
23
28
21
Milford Pkwy
5:00-5:30
33
Density
Plains Rd
18
Density
Schoolhouse Rd
4:30-5:00
32
Density
Ferry Blvd
21
Connecticut Ave
4:00-4:30
31
Density
30
Density
Broad St
29
Time
Density
Honeyspot Rd
Density
I-95
18
6:30-7:00
29
27
30
21
31
30
18
32
16
20
33
22
23
21
19
34
46
15
35
43
27
Milford Pkwy
15
Schoolhouse Rd
18
33
PlainsPlains
Rd Rd
16
26
25
21
22
32
Ferry Ferry
Blvd Blvd
29
29
35
BroadBroad
St
St
6:00-6:30
26
33
Honeyspot Rd
5:30-6:00
39
5:00-5:30
Connecticut Ave
Time
15
21
36
38
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
19
I-95
Density
SOUTHBOUND
5:00-5:30
5:30-6:00
29
26
6:00-6:30
17
6:30-7:00
23
43
45
30
29
22
32
38
24
29
27
34
42
23
21
23
25
27
24
36
27
Density
41
35
23
21
23
25
29
16
19
18
23
23
47
35
51
61
SR 34
29
42
Density
1st Ave
4:30-5:00
41
Density
Sawmill Rd
24
Milford Pkwy
4:00-4:30
40
Density
39
Density
Marsh Hill Rd
38
Time
Density
Woodmont Rd
Density
62
32
22
I-95
I-95
33
6:00-6:30
17
6:30-7:00
38
23
27
62
78
84
17
24
22
19
20
14
39
23
31
23
18
40
58
23
42
NORTHBOUND
Colors
(white)
20
68
21
23
41
80
Density
< 31 pcplpm
31-40
41-62
> 62
81
69
19
16
43
35
40
39
43
SR 34
24
83
5:30-6:00
33
71
1st Ave
1st Ave
5:00-5:30
44
Sawmill Rd
31
66
Marsh Hill Rd
4:30-5:00
34
Woodmont Rd
27
Milford Pkwy
4:00-4:30
Time
30
23
45
47
EVENING LEVEL-OF-SERVICE (I-95)
I-95
Level-of-Service
SOUTHBOUND
Time
LOS
21
2
LOS
LOS
3
4
LOS
5
LOS
6
LOS
7
LOS
8
9
C
4:30-5:00
C
C
C
C
C
D
B
C
5:00-5:30
D
B
D
D
E
D
F
C
E
D
E
D
5:30-6:00
E
F
6:00-6:30
D
F
D
D
F
F
6:30-7:00
D
E
E
D
D
4:00-4:30
B
B
C
D
4:30-5:00
C
C
C
C
5:00-5:30
B
E
Elm St
C
Washington Blvd
D
West Ave
C
E Putnam Ave
C
Indian Field Rd
C
Arch St
C
Delavan Ave
B
I-287
4:00-4:30
C
E
A
E
C
C
F
F
F
F
E
E
D
F
F
F
LOS
I-95
6:30-7:00
B
C
2
F
F
F
F
F
F
D
F
F
F
3
4
5
6
F
F
F
7
F
F
C
F
F
Elm StElm St
C
D
F
Washington Blvd
6:00-6:30
21
C
E
West Ave
C
C
E Putnam Ave
5:30-6:00
Indian Field Rd
C
Arch St
Arch St
Delavan Ave
I-287
Time
F
8
9
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
21
I-95
Level-of-Service
SOUTHBOUND
6:00-6:30
6:30-7:00
D
C
C
C
C
D
D
C
15
LOS
16
LOS
17
D
F
F
B
C
C
F
F
D
C
D
C
D
C
C
C
Saugatuck Ave
C
C
D
D
14
LOS
East Ave
D
C
13
LOS
US 7
C
12
LOS
South Norwalk
C
LOS
5:30-6:00
11
C
C
LOS
5:00-5:30
10
Noroton Ave
4:30-5:00
4:00-4:30
9
LOS
LOS
Time
C
E
D
D
C
C
C
C
B
C
D
C
C
C
C
C
D
B
C
C
F
F
F
F
F
D
F
F
F
F
F
F
F
F
F
F
F
F
I-95
F
F
F
6:30-7:00
9
F
10
F
F
11
F
F
12
F
F
F
F
13
22
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
F
F
C
14
NORTHBOUND
Colors
(white)
F
D
15
F
F
Saugatuck Ave
F
F
US 7 US 7
F
F
South Norwalk
F
F
East Ave
East Ave
6:00-6:30
F
F
F
5:30-6:00
F
F
5:00-5:30
4:30-5:00
Noroton Ave
4:00-4:30
Time
F
F
F
E
16
F
E
17
I-95
(Between SR 476/Sherwood Connector & Connecticut Ave)
Level-of-Service
SOUTHBOUND
6:30-7:00
B
C
B
C
B
C
C
C
B
B
C
C
C
C
B
C
D
C
B
C
C
B
C
B
B
C
B
B
F
F
F
F
F
F
F
F
C
C
C
27
LOS
28
29
C
D
C
C
D
C
C
C
C
D
D
C
D
C
C
C
D
C
D
C
D
C
B
B
D
B
C
C
C
B
C
F
D
D
F
F
B
D
F
E
E
D
F
C
D
Connecticut Ave
C
26
LOS
Stratford Ave
C
25
LOS
SR 8 / SR 25
B
24
LOS
Wordin Ave
C
23
LOS
Fairfield Ave
22
LOS
US 1 (Kings Hwy)
21
LOS
Meadowbrook Rd
6:00-6:30
20
LOS
Mill Plan Rd
5:30-6:00
LOS
Bronson Rd
5:00-5:30
19
US 1 (Post Rd)
4:30-5:00
4:00-4:30
18
LOS
SR 135 (Benson Rd)
LOS
Time
I-95
6:30-7:00
18
F
E
D
19
F
D
20
E
21
E
E
22
E
E
23
C
D
C
24
D
F
F
C
25
D
B
C
F
26
C
Stratford Ave
D
C
SR 8 / SR 25
D
E
Wordin Ave
F
F
Fairfield Ave
F
F
D
C
B
27
E
Connecticut Ave
F
F
F
US 1 (Kings Hwy)
F
F
F
Meadowbrook Rd
6:00-6:30
F
F
SR 135 (Benson Rd)
5:30-6:00
F
Mill Plan Rd
5:00-5:30
Bronson Rd
4:30-5:00
US 1 (Post Rd)
4:00-4:30
Time
D
28
29
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
23
I-95
Level-of-Service
SOUTHBOUND
5:30-6:00
C
B
B
D
B
C
C
C
C
C
C
C
C
C
C
C
B
B
D
C
B
A
B
B
B
4:00-4:30
D
D
D
4:30-5:00
D
D
D
6:00-6:30
6:30-7:00
C
B
35
LOS
36
38
C
C
C
C
C
D
C
B
C
C
D
C
C
B
B
B
B
B
B
D
C
B
B
C
D
C
C
D
C
Milford Pkwy
5:00-5:30
34
LOS
Plains Rd
B
33
LOS
Schoolhouse Rd
4:30-5:00
32
LOS
Ferry Blvd
C
Connecticut Ave
4:00-4:30
31
LOS
30
LOS
Broad St
29
Time
LOS
Honeyspot Rd
LOS
I-95
B
6:30-7:00
29
30
B
D
C
31
D
B
32
B
C
33
34
NORTHBOUND
Colors
(white)
24
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
F
C
C
C
C
B
35
E
D
Milford Pkwy
B
Schoolhouse Rd
B
D
PlainsPlains
Rd Rd
C
C
C
C
D
Ferry Ferry
Blvd Blvd
D
D
D
BroadBroad
St
St
6:00-6:30
C
D
Honeyspot Rd
5:30-6:00
E
5:00-5:30
Connecticut Ave
Time
B
C
36
38
I-95
Level-of-Service
SOUTHBOUND
5:30-6:00
D
C
6:00-6:30
B
6:30-7:00
C
43
45
D
D
C
D
E
C
D
D
D
E
C
C
C
C
D
C
E
D
LOS
E
D
C
C
C
C
D
B
C
B
C
C
47
D
F
F
SR 34
5:00-5:30
42
LOS
1st Ave
D
41
LOS
Sawmill Rd
4:30-5:00
40
LOS
Marsh Hill Rd
C
Milford Pkwy
4:00-4:30
LOS
39
38
LOS
Woodmont Rd
LOS
Time
F
D
C
I-95
I-95
D
6:00-6:30
B
6:30-7:00
38
C
D
F
F
F
B
C
C
C
C
B
39
C
D
C
B
40
F
F
C
C
41
F
C
42
F
F
C
B
43
D
E
E
E
SR 34
C
F
5:30-6:00
D
F
1st Ave
1st Ave
5:00-5:30
E
Sawmill Rd
D
F
Marsh Hill Rd
4:30-5:00
D
Woodmont Rd
D
Milford Pkwy
4:00-4:30
Time
D
C
45
47
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
25
MAINLINE BOTTLENECKS (I-95 EVENING)





Bottleneck
Queue
#
Direction Type
Head of Queue
(Lat/Long)
Time Period
Queue
Length
Photos
1
NB
Mainline
41 03 09 / 73 31 48
Int. 8 (Elm St)
Int. 3 (Arch St)
4:00-7:00 p.m.
4-6 miles
Traffic entering at the series of interchanges along this section
of I-95
I-95_PM_1
2
NB
Mainline
41 06 29 / 73 24 29
Int. 16 (East Ave)
Int. 8 (Elm St)
4:00-7:00 p.m.
7-8 miles
of I-95. The lane drop (3 lanes to 2) at East Ave.
I-95_PM_2
3
NB
Mainline
41 08 31 / 73 16 31
Int. 20 (Bronson Rd)
Int. 16 (East Ave)
4:00-6:30 p.m.
6-8 miles
of I-95
I-95_PM_3
4
NB
Mainline
41 10 02 / 73 13 46
Int. 24 (Chambers St)
Int. 20 (Bronson Rd)
4:00-6:30 p.m.
2-3 miles
of I-95
I-95_PM_4
5
NB
Mainline
41 10 15 / 73 11 34
Int. 27 (SR 8)
Int. 24 (Chambers St)
4:00-7:00 p.m.
1-2 miles
The lane drop ( 4 lanes to 3) at SR 8. Traffic intermittently
exiting at SR 8 (backing into the right lane of I-95).
I-95_PM_5
6
NB
Mainline
41 17 03 / 72 55 59
Int. 45 (SR 10 / Ella T Grasso Blvd)
Int. 41 (Marsh Hill Rd)
4:00-6:00 p.m.
3-5 miles
of I-95. Weaving/merging at the closely spaced interchanges at
SR 122 and SR 10
I-95_PM_6
7
SB
Mainline
41 00 00 / 73 39 13
Int. 2 (Delavan Ave)
Int. 4 (Indian Field Rd)
5:30-7:00 p.m.
3-4 miles
Weaving/merging at E Putnam Ave and Harvard Ave/West Ave I-95_PM_7
8
SB
Mainline
41 02 25 / 73 34 54
Int. 7 (Washington Blvd)
5:30-7:00 p.m.
2-3 miles
Traffic entering at US 7
I-95_PM_8
9
SB
Mainline
41 06 05 / 73 26 08
Int. 16 (East Ave)
4:00-5:00 p.m.
1-1.5 miles
Traffic entering at Field Point Rd and Arch St
I-95_PM_9
10
SB
Mainline
41 17 02 / 72 56 17
Int. 43 (1st Ave)
Int. 45 (SR 34)
4:30-6:00 p.m.
2-2.5 miles
Lane drop (4 lanes to 3) at SR 10 and merging weaving at SR
10 and SR 122
I-95_PM_10
26
RAMP AND SIDE ROAD QUEUES (I-95 EVENING)
Highway
AM / PM Queue #
Interchange
Ramp / Side Road
Direction
Head of Queue
(Lat/Long)
Time
Queue Population
(vehicles per lane)
Frequency
Notes
I-95
AM
1
Int. 3 (Arch St)
Exit ramp
SB
41 01 12.6 / 73 37 35.4
8:00-9:00 a.m.
20-30 vpl (2 lanes)
Intermittent
I-95
AM
2
Int. 15 (US 7)
Entrance ramp
SB
41 06 22.3 / 73 25 27.3
7:00-9:00 a.m.
50-80 vpl (1 lane)
Intermittent
I-95 Ramps AM_2
I-95
AM
3
Int. 27 (SR 8 / SR 25)
Entrance ramp
SB
41 10 14.2 / 73 11 39.9
7:00-9:00 a.m.
30-50 vpl (1 lane)
Intermittent
I-95 Ramps AM_3
Timea.m.
8:59
Queue Population
(vehicles
lane)
90-100
vplper
(2 lanes)
Frequency
One
time
congestion)
Notes
Photos
I-95
Ramps AM_4
Photos
Highway
I-95
Queue #
AM / PM 4
Interchange
Int.
21 (I-287)
Ramp / Side
Road
Entrance
ramp
Direction
NB
Head of Queue
(Lat/Long)
40
59 26.4 / 73 39 47.9
I-95
I-95
AM
PM
1
1
Int. 3 (Arch St)
Int. 27 (SR 8 / SR 25)
Exit ramp
Exit ramp
SB
NB
41 01 12.6 / 73 37 35.4
41 10 16.4 / 73 11 29.4
8:00-9:00 a.m.
4:15-6:45 p.m.
20-30 vpl (2 lanes)
40-60 vpl (1 lane)
Intermittent
Intermittent
I-95 Ramps PM-1
I-95
I-95
AM
PM
2
2
Int. 15 (US 7)
Int. 6 (West Ave)
Entrance ramp
Entrance ramp
SB
NB
41 06 22.3 / 73 25 27.3
41 02 39.0 / 73 33 13.9
7:00-9:00 a.m.
5:00-6:00 p.m.
50-80 vpl (1 lane)
20-25 vpl (1 lane)
Intermittent
Intermittent
I-95 Ramps AM_2
I-95 Ramps PM-2
I-95
I-95
AM
PM
3
3
Int. 27 (SR 8 / SR 25)
Entrance ramp
Entrance ramp
SB
SB
41 10 14.2 / 73 11 39.9
41 02 49.8 / 73 32 37.4
7:00-9:00 a.m.
5:31 p.m.
30-50 vpl (1 lane)
20-25 vpl (1 lane)
Intermittent
One time
I-95 Ramps AM_3
I-95 Ramps PM-3
I-95
I-95
AM
PM
4
4
Int. 21 (I-287)
Entrance ramp
Entrance ramp
NB
NB
40 59 26.4 / 73 39 47.9
41 06 11.5 / 73 25 53.3
8:59 a.m.
5:00-6:00 p.m.
25-30 vpl (1 lane)
One time
Intermittent
congestion)
I-95 Ramps AM_4
I-95 Ramps PM-4
I-95
PM
1
5
27 (SR
25)Hwy)
Int. 24
(US 8
1 //SR
Kings
Exit ramp
NB
10 52.3
16.4 / 73 14
11 09.6
29.4
41 09
4:15-6:45 p.m.
5:00-7:00
40-60 vpl (2
(1 lanes)
lane)
25-30
Intermittent
Congestion
befound
caused
geometrics
of the
The
head ofapperared
the queue to
was
at by
thethe
signal
at the head
of ramp
the ramp
PM-1
I-95 Ramps PM-5
I-95
PM
2
6
Int. 6
Ave)
15(West
(US 7)
Entrance ramp
NB
41 02
06 39.0
23.3 / 73 33
25 13.9
05.8
5:00-6:00
5:30-6:30 p.m.
20-25
30-60 vpl (1 lane)
Intermittent
I-95 Ramps PM-2
PM-6
I-95
Merritt Pkwy
PM
AM
3
1
Entrance ramp
Exit ramp
SB
SB
41 02 49.8 / 73 32 37.4
41 06 45.2 / 73 32 47.2
5:31 p.m.
8:45 a.m.
20-25 vpl (1 lane)
30-35 vpl (2 lanes)
One time
One time
I-95 Ramps PM-3
Merritt Ramps AM_1
I-95
Merritt Pkwy
PM
AM
4
2
Entrance ramp
High Ridge Rd
NB
WB
41 06 11.5 / 73 25 53.3
41 06 45.0 / 73 32 46.6
5:00-6:00 p.m.
8:00-8:30 a.m.
25-30 vpl (1 lane)
50-60 vpl (2 lanes)
Intermittent
Intermittent
I-95 Ramps PM-4
Merritt Ramps AM_2
I-95
Merritt Pkwy
PM
AM
5
3
Exit ramp
Entrance ramp
NB
SB
41 09 52.3 / 73 14 09.6
41 06 12.4 / 73 33 55.6
5:00-7:00 p.m.
7:45-8:15 a.m.
25-30 vpl (2 lanes)
20-25 vpl (1 lane)
Intermittent
Intermittent
I-95 Ramps PM-5
Merritt Ramps AM_3
I-95
Merritt Pkwy
PM
AM
6
4
Int. 15 (US 7)
Entrance ramp
Old Stamford Rd
NB
WB
41 06 23.3 / 73 25 05.8
41 07 07.3 / 73 29 56.1
5:30-6:30 p.m.
7:30-8:30 a.m.
30-60 vpl (1 lane)
50-60 vpl (1 lane)
Intermittent
Intermittent
I-95 Ramps PM-6
Merritt Ramps AM_4
Merritt Pkwy
AM
1
5
Int. 35
137
/ High
Ridge Rd)
44 (SR
(Black
Rock
Turnpike)
Exit
ramp ramp
Entrance
SB
41 06
12 45.2
04.2 / 73 32
16 47.2
18.9
8:45
a.m. a.m.
7:00-8:00
30-35
50-100vpl
vpl(2(1lanes)
lane)
One
time
Intermittent
The
head back
of thethrough
queue was
found at
at Black
the signal
High Ridge Rd
extended
the signal
RockatPkwy
Merritt Ramps AM_1
AM_5
Merritt Pkwy
AM
2
6
Int. 35
137
/ High
Ridge Rd)
44 (SR
(Black
Rock
Turnpike)
High
BlackRidge
Rock Rd
Tnpk
WB
41 06
12 45.0
08.2 / 73 32
16 46.6
08.7
8:00-8:30
7:30-8:30 a.m.
50-60
25-30 vpl (2
(1 lanes)
lane)
Intermittent
During
oneofobservation,
congestion
through
several
upstream signals
The head
the queue was
found atextended
the signalback
at the
northbound
ramp
Merritt Ramps AM_2
AM_6
Merritt Pkwy
AM
3
7
Int. 34
104Parkway)
/ Long Ridge Rd)
54 (SR
(Milford
Entrance ramp
SB
41 06
14 12.4
56.0 / 73 33
04 55.6
48.2
7:45-8:15
7:30-8:00 a.m.
20-25
50-70 vpl (1 lane)
Intermittent
The
head ofapperared
the queue to
was
where
vehicles
waited
merge
Congestion
befound
caused
by the
geometrics
of to
the
ramp onto the Parkway
Merritt Ramps AM_3
AM_7
Merritt Pkwy
Merritt Pkwy
AM
PM
4
1
Old Stamford Rd
Entrance ramp
WB
NB
41 07 07.3 / 73 29 56.1
41 06 50.0 / 73 32 28.5
7:30-8:30 a.m.
5:00-6:00 p.m.
50-60 vpl (1 lane)
20-30 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps AM_4
Merritt Ramps PM_1
Merritt Pkwy
Merritt Pkwy
AM
PM
5
2
Entrance ramp
Old Stamford Rd
SB
WB
41 12 04.2 / 73 16 18.9
41 07 00.2 / 73 29 58.1
7:00-8:00 a.m.
5:00-6:00 p.m.
50-100 vpl (1 lane)
30-50 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps AM_5
Merritt Ramps PM_2
Merritt Pkwy
Merritt Pkwy
AM
PM
6
3
Black Rock Tnpk
New Canaan Ave
WB
EB
41 12 08.2 / 73 16 08.7
41 08 02.6 / 73 27 31.9
7:30-8:30 a.m.
5:00-6:00 p.m.
25-30 vpl (1 lane)
20-30 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps AM_6
Merritt Ramps PM_3
Merritt Pkwy
Merritt Pkwy
AM
PM
7
4
Entrance ramp
Willow Rd
SB
WB
41 14 56.0 / 73 04 48.2
41 09 53.5 / 73 22 39.3
7:30-8:00 a.m.
4:00-6:00 p.m.
50-70 vpl (1 lane)
20-40 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps AM_7
Merritt Ramps PM_4
Merritt Pkwy
PM
1
5
Int. 35
High Ridge
41 (SR 137
33 / /Willow
Rd) Rd)
Entrance ramp
NB
41 06
09 50.0
49.5 / 73 32
22 28.5
54.3
5:00-6:00
4:00-5:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_1
PM_5
Merritt Pkwy
PM
2
6
Int. 36
Old Stamford
42 (SR 106
57 / /Weston
Rd) Rd)
Old
Stamford
Weston
Rd Rd
WB
41 07
09 00.2
46.0 / 73 29
21 58.1
25.6
5:00-6:00
5:41 p.m. p.m.
30-50
25-30 vpl (1 lane)
Intermittent
One time
The head of the queue was found at the Parkway
ramps
(no signal)
signal at the
Parkway
ramps
Merritt Ramps PM_2
PM_6
Merritt Ramps PM_3
PM_7
Merritt Pkwy
PM
3
7
Int. 38
52 (SR 123
8) / New Canaan Ave)
New
Canaan
Ave
Entrance
ramp
EB
NB
41 08
14 02.6
16.3 / 73 27
09 31.9
35.8
5:00-6:00
4:33 p.m. p.m.
20-30
70-75 vpl (1 lane)
Intermittent
One time
The
the atypical)
queue was found at the signal at the Parkway ramps
may head
have of
been
Merritt Pkwy
PM
4
Willow Rd
WB
41 09 53.5 / 73 22 39.3
4:00-6:00 p.m.
20-40 vpl (1 lane)
Intermittent
Merritt Ramps PM_4
Merritt Pkwy
PM
5
Entrance ramp
NB
41 09 49.5 / 73 22 54.3
4:00-5:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_5
Merritt Pkwy
PM
6
Weston Rd
WB
41 09 46.0 / 73 21 25.6
5:41 p.m.
25-30 vpl (1 lane)
One time
Merritt Ramps PM_6
One time
Merritt Ramps PM_7
Merritt Pkwy
PM
7
Int. 52 (SR 8)
Entrance ramp
NB
41 14 16.3 / 73 09 35.8
4:33 p.m.
70-75 vpl (1 lane)
27
Part II: MERRITT PARKWAY
29
MORNING DENSITY (MERRITT PKWY)
Merritt Parkway (SR 15)
(Between I-287 & North St)
Density
SOUTHBOUND
28
29
30 / 27
10
7:00-7:30
14
16
17
11
7:30-8:00
15
8:00-8:30
23
27
30
21
N Ridge Rd
10
Lincoln Ave
9
Purchase St
8
I-287
6:30-7:00
27
Density
23
16
8:30-9:00
16
27
25
17
9:00-9:30
7
10
14
6:30-7:00
11
7
7:00-7:30
15
13
7:30-8:00
29
Density
28
Density
29
31
13
14
19
15
24
23
18
18
25
16
30
24
18
23
25
15
15
17
19
8
8
8
9
9
17
14
12
11
13
North St
27
Density
Old Mill Rd
26
Density
Round Hil Rd
Time
Density
SR 120A (King St)
Density
MERRITT PKWY
15
13
9:00-9:30
26
14
13
27
15
29
15
13
Colors
(white)
30
Density
< 31 pcplpm
31-40
41-62
> 62
19
19
23
15
28
NORTHBOUND
17
17
11
30 / 27
13
North St
16
Old Mill Rd
18
19
12
28
17
Round Hil Rd
21
N Ridge Rd
17
16
SR 120A (King St)
21
8:30-9:00
14
Lincoln Ave
19
Purchase St
8:00-8:30
I-287
Time
14
29
31
(Between North St & SR 124/South Ave)
Density
SOUTHBOUND
34
24
7:00-7:30
23
24
7:30-8:00
8:00-8:30
30
28
Den Rd
18
North St
6:30-7:00
28
26
35
19
20
28
25
27
Density
36
30
32
33
34
36
37
31
27
34
35
8:30-9:00
24
31
31
9:00-9:30
23
22
17
27
29
6:30-7:00
6
6
11
9
10
7:00-7:30
11
12
SR 124 (South Ave)
33
Density
SR 106 (Stamford Rd)
31
Density
SR 137 (High Bridge Rd)
Time
Density
SR 104 (Long Ridge Rd)
Density
MERRITT PKWY
12
9:00-9:30
31
12
33
17
20
17
34
9
19
19
16
35
23
19
18
31
SR 124 (South Ave)
22
20
14
16
8:30-9:00
10
12
20
11
8:00-8:30
16
Den Rd
7:30-8:00
North St
Time
18
36
37
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
31
(Between SR 124/South Ave & SR 57/Weston Rd)
Density
SOUTHBOUND
8:30-9:00
9:00-9:30
57
53
40
Density
41
30
22
27
49
39
26
72
87
65
35
58
64
59
61
72
81
43
28
21
11
20
55
8
12
8
5
6
14
13
10
25
16
59
36
42
61
78
SR 57 (Weston Rd)
8:00-8:30
SR 124 (South Ave)
7:30-8:00
34
39
Density
SR 33 (Wilton Rd)
31
6:30-7:00
7:00-7:30
38
Density
Main Ave
37
SR 123 (New Canaan Rd)
Time
Density
US 7
Density
MERRITT PKWY
20
19
9:00-9:30
37
15
4
19
16
17
38
10
12
39
5
40
NORTHBOUND
Colors
(white)
32
13
Density
< 31 pcplpm
31-40
41-62
> 62
12
14
11
9
SR 57 (Weston Rd)
8:30-9:00
19
18
SR 33 (Wilton Rd)
8:00-8:30
18
Main Ave
7:30-8:00
11
US 7
7:00-7:30
SR 124 (South Ave)
6:30-7:00
Time
8
41
42
(Between SR 57/Weston Rd & SR 8)
Density
SOUTHBOUND
9:00-9:30
74
94
64
33
19
87
72
35
19
67
39
79
82
91
85
65
61
32
75
78
Density
51
52
27
15
30
8
44
53
31
21
46
SR 8
90
70
81
Density
50
Huntington Pkwy
62
77
Density
49
SR 127 (White Plain Rd)
8:30-9:00
65
77
Density
48
SR 25
8:00-8:30
51
35
Density
47
SR 111 (Main St)
7:30-8:00
SR 57 (Weston Rd)
7:00-7:30
Density
46
Park Ave
39
6:30-7:00
Density
44
SR 58 (Black Rock Tnpk)
42
SR 59 (Easton Tnpk)
Density
Time
15
56
84
67
30
21
18
23
22
5
6
7
7
10
11
9
8
14
11
13
9
18
14
24
9
MERRITT PKWY
19
9:00-9:30
42
14
10
44
13
20
14
46
13
47
17
22
18
15
48
15
14
49
35
25
30
21
50
21
19
SR 8
15
SR 25
13
19
Huntington Pkwy
13
14
13
8:30-9:00
16
13
SR 111 (Main St)
8:00-8:30
14
10
Park Ave
7:30-8:00
10
SR 59 (Easton Tnpk)
7:00-7:30
SR 57 (Weston Rd)
6:30-7:00
Time
17
16
51
52
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
33
(Between SR 8 & SR 34/Derby Ave)
Density
SOUTHBOUND
52
53
Density
54
Density
55
56
14
7:00-7:30
25
20
18
17
7:30-8:00
30
8:00-8:30
20
8:30-9:00
21
9:00-9:30
21
16
20
Wellington Rd
20
Milford Pkwy
13
SR 110 (Main St)
16
SR 8
6:30-7:00
25
Density
21
26
57
15
22
26
21
23
15
21
22
24
21
18
16
13
6:30-7:00
11
7
11
7
6
7:00-7:30
15
9
9
10
7:30-8:00
26
SR 34 (Derby Ave)
Time
Density
Density
MERRITT PKWY
17
9:00-9:30
52
18
13
53
13
54
19
14
13
11
13
22
20
18
11
55
56
NORTHBOUND
Colors
(white)
34
SR 34 (Derby Ave)
20
20
29
15
Wolf Harbor Rd
21
8:30-9:00
16
Milford Pkwy
22
SR 110 (Main St)
8:00-8:30
SR 8
Time
Density
< 31 pcplpm
31-40
41-62
> 62
57
MORNING LEVEL-OF-SERVICE (MERRITT PKWY)
Level-of-Service
SOUTHBOUND
28
29
30 / 27
A
7:00-7:30
B
B
B
A
7:30-8:00
B
8:00-8:30
C
D
D
C
N Ridge Rd
A
Lincoln Ave
A
Purchase St
A
I-287
6:30-7:00
D
LOS
C
B
8:30-9:00
B
D
C
B
9:00-9:30
A
A
B
6:30-7:00
A
A
7:00-7:30
B
B
7:30-8:00
D
LOS
28
LOS
29
31
B
B
C
B
C
C
B
B
C
B
D
C
B
C
C
B
B
B
C
A
A
A
A
A
B
B
B
A
B
North St
27
LOS
Old Mill Rd
26
LOS
Round Hil Rd
Time
LOS
SR 120A (King St)
LOS
MERRITT PKWY
B
B
9:00-9:30
26
B
B
27
B
B
B
29
B
B
A
30 / 27
B
C
C
B
28
C
North St
B
Old Mill Rd
B
C
B
28
B
Round Hil Rd
C
N Ridge Rd
B
B
SR 120A (King St)
C
8:30-9:00
B
Lincoln Ave
C
Purchase St
8:00-8:30
I-287
Time
B
29
31
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
35
Level-of-Service
34
C
7:00-7:30
C
C
7:30-8:00
8:00-8:30
D
D
Den Rd
B
North St
6:30-7:00
D
C
35
C
C
D
C
D
LOS
36
D
D
D
D
E
37
D
D
D
D
8:30-9:00
C
D
D
9:00-9:30
C
C
B
D
D
6:30-7:00
A
A
A
A
A
7:00-7:30
A
B
SR 124 (South Ave)
33
LOS
31
SOUTHBOUND
LOS
Time
LOS
LOS
MERRITT PKWY
B
9:00-9:30
31
B
33
B
C
B
34
A
C
C
B
35
Colors
(white)
36
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
C
B
D
B
36
NORTHBOUND
C
SR 124 (South Ave)
C
C
B
B
8:30-9:00
A
B
C
A
8:00-8:30
B
Den Rd
7:30-8:00
North St
Time
37
Level-of-Service
SOUTHBOUND
8:30-9:00
9:00-9:30
F
F
LOS
40
41
42
D
C
D
D
F
E
C
F
F
F
F
F
F
F
F
E
D
C
A
C
F
A
B
A
A
A
B
B
A
B
C
B
F
E
F
F
F
SR 57 (Weston Rd)
8:00-8:30
SR 124 (South Ave)
7:30-8:00
D
39
LOS
SR 33 (Wilton Rd)
D
6:30-7:00
7:00-7:30
38
LOS
Main Ave
37
Time
LOS
US 7
LOS
MERRITT PKWY
C
C
9:00-9:30
37
B
A
C
B
B
38
B
A
B
39
B
A
B
A
A
SR 57 (Weston Rd)
8:30-9:00
C
SR 33 (Wilton Rd)
8:00-8:30
B
Main Ave
7:30-8:00
A
US 7
7:00-7:30
SR 124 (South Ave)
6:30-7:00
Time
A
40
41
42
SOUTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
37
Level-of-Service
SOUTHBOUND
9:00-9:30
F
F
F
50
F
F
D
C
F
F
D
C
F
E
F
F
F
F
F
F
F
D
F
F
LOS
51
52
D
B
D
A
E
F
D
C
F
SR 8
F
49
LOS
Huntington Pkwy
F
F
48
LOS
8:30-9:00
F
D
47
LOS
SR 25
8:00-8:30
SR 57 (Weston Rd)
7:30-8:00
F
46
LOS
SR 111 (Main St)
E
6:30-7:00
7:00-7:30
44
LOS
Park Ave
42
Time
LOS
SR 59 (Easton Tnpk)
LOS
B
F
F
F
D
C
B
C
C
A
A
A
A
A
A
A
A
B
A
B
A
B
B
C
A
MERRITT PKWY
C
9:00-9:30
42
B
A
44
B
C
B
46
B
47
NORTHBOUND
Colors
(white)
38
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
B
C
B
B
48
B
B
49
D
C
D
C
50
C
C
SR 8
B
SR 25
B
C
Huntington Pkwy
B
B
B
8:30-9:00
B
B
SR 111 (Main St)
8:00-8:30
B
A
Park Ave
7:30-8:00
A
SR 59 (Easton Tnpk)
7:00-7:30
SR 57 (Weston Rd)
6:30-7:00
Time
B
B
51
52
Level-of-Service
SOUTHBOUND
52
53
LOS
54
LOS
55
56
B
7:00-7:30
C
C
B
B
7:30-8:00
D
8:00-8:30
C
8:30-9:00
C
9:00-9:30
C
B
C
Wellington Rd
C
Milford Pkwy
B
SR 110 (Main St)
B
SR 8
6:30-7:00
C
LOS
C
C
57
B
C
C
C
C
B
C
C
C
C
B
B
B
6:30-7:00
A
A
A
A
A
7:00-7:30
B
A
A
A
7:30-8:00
C
SR 34 (Derby Ave)
Time
LOS
LOS
MERRITT PKWY
B
9:00-9:30
52
B
B
53
B
B
B
54
A
55
B
C
C
B
SR 34 (Derby Ave)
C
C
C
D
B
Wolf Harbor Rd
C
8:30-9:00
B
Milford Pkwy
C
SR 110 (Main St)
8:00-8:30
SR 8
Time
A
56
57
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
39
MAINLINE BOTTLENECKS (MERRITT PKWY MORNING)




Bottleneck #
Queue
Direction Type
Head of Queue
(Lat/Long)
Time Period
Queue Length
1
SB
Mainline
41 09 49 / 73 22 56
Int. 41 (SR 33 / Wilton Rd)
Int. 52 (SR 8)
7:00-9:30 a.m.
10-13 miles
Weaving/merging at the series of interchanges along
this section of Merritt Pkwy
Merritt_AM_1
2
SB
Mainline
41 07 02 / 73 30 03
Int. 41 (SR 33 / Wilton Rd)
7:30-9:00 a.m.
4-7 miles
Weaving/merging at the series of interchanges along
this section of Merritt Pkwy
Merritt_AM_2
40
Photos
I-95
PM
1
Int. 27 (SR 8 / SR 25)
Exit ramp
NB
41 10 16.4 / 73 11 29.4
4:15-6:45 p.m.
40-60 vpl (1 lane)
Intermittent
I-95 Ramps PM-1
I-95
PM
2
Int. 6 (West Ave)
Entrance ramp
NB
41 02 39.0 / 73 33 13.9
5:00-6:00 p.m.
20-25 vpl (1 lane)
Intermittent
I-95 Ramps PM-2
I-95
PM
3
Entrance ramp
SB
41 02 49.8 / 73 32 37.4
5:31 p.m.
20-25 vpl (1 lane)
One time
I-95 Ramps PM-3
I-95
PM
4
Entrance ramp
NB
41 06 11.5 / 73 25 53.3
5:00-6:00 p.m.
25-30 vpl (1 lane)
Intermittent
I-95 Ramps PM-4
I-95
PM
5
Exit ramp
NB
41 09 52.3 / 73 14 09.6
5:00-7:00 p.m.
25-30 vpl (2 lanes)
Intermittent
I-95 Ramps PM-5
I-95
Highway
PM
6
AM / PM Queue #
Int. 15 (US 7)
Interchange
Entrance ramp
Ramp / Side Road
NB
Direction
41
06 of
23.3
/ 73 25 05.8
Head
Queue
(Lat/Long)
5:30-6:30 p.m.
Time
30-60
(1 lane)
Queuevpl
Population
(vehicles per lane)
Intermittent
Frequency
Notes
I-95 Ramps PM-6
Photos
Merritt Pkwy
I-95
AM
AM
1
1
Int. 3
35(Arch
(SR 137
Int.
St) / High Ridge Rd)
Exit ramp
ramp
Exit
SB
SB
41 01
06 12.6
45.2 // 73
41
73 32
37 47.2
35.4
8:45
a.m. a.m.
8:00-9:00
30-35 vpl
vpl (2
(2 lanes)
lanes)
20-30
One time
Intermittent
The head
head of
of the
the queue
queue was
was found
found at
at the
the signal
signal at
at the
Highhead
Ridge
Merritt
Ramps
AM_1
The
of Rd
the ramp (2 dedicated right-turn lanes) I-95
Ramps
AM_1
Merritt Pkwy
I-95
AM
AM
2
2
Int. 15
35 (US
(SR 7)
137 / High Ridge Rd)
Int.
High Ridge
Rd
Entrance
ramp
WB
SB
41 06
06 22.3
45.0 // 73
73 25
32 27.3
46.6
41
8:00-8:30 a.m.
a.m.
7:00-9:00
50-60 vpl
vpl (1
(2 lane)
lanes)
50-80
Intermittent
Intermittent
During
oneofobservation,
congestion
extended
backwaited
through
severalonto
upstream
signals
The
head
the queue was
found where
vehicles
to merge
the Parkway
Merritt
Ramps
AM_2
I-95
Ramps
AM_2
Merritt Pkwy
I-95
AM
AM
3
3
Int. 27
34 (SR
(SR 8
104
/ Long
Int.
/ SR
25) Ridge Rd)
Entrance ramp
ramp
Entrance
SB
SB
41 10
06 14.2
12.4 // 73
73 11
33 39.9
55.6
41
7:45-8:15 a.m.
a.m.
7:00-9:00
20-25 vpl
vpl (1
(1 lane)
lane)
30-50
Intermittent
Intermittent
The head
head of
of the
the queue
queue was
was found
found where
where vehicles
vehicles waited
waited to
to merge
merge onto
onto I-95
the Parkway
The
Merritt
Ramps
AM_3
I-95
Ramps
AM_3
Intermittent
One
time
congestion)
Merritt
Ramps
AM_4
I-95
Ramps
AM_4
Merritt Ramps AM_5
I-95 Ramps PM-1
Merritt Pkwy
I-95
AM
AM
4
4
Int. 21
36 (I-287)
(Old Stamford Rd)
Int.
RAMP AND SIDE ROAD QUEUES (MERRITT PKWY MORNING)
Old Stamford
Entrance
rampRd
WB
NB
41 59
07 26.4
07.3 // 73
73 39
29 47.9
56.1
40
7:30-8:30
8:59
a.m. a.m.
50-60 vpl
90-100
vpl(1(2lane)
lanes)
Merritt Pkwy
I-95
AM
PM
5
1
Int. 27 (SR 8 / SR 25)
Entrance ramp
Exit ramp
SB
NB
41 12 04.2 / 73 16 18.9
41 10 16.4 / 73 11 29.4
7:00-8:00 a.m.
4:15-6:45 p.m.
50-100 vpl (1 lane)
40-60 vpl (1 lane)
Intermittent
Intermittent
Merritt Pkwy
I-95
AM
PM
6
2
Int. 6 (West Ave)
Black Rock Tnpk
Entrance ramp
WB
NB
41 12 08.2 / 73 16 08.7
41 02 39.0 / 73 33 13.9
7:30-8:30 a.m.
5:00-6:00 p.m.
25-30 vpl (1 lane)
20-25 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps AM_6
I-95 Ramps PM-2
Merritt Pkwy
I-95
AM
PM
7
3
Entrance ramp
Entrance ramp
SB
SB
41 14 56.0 / 73 04 48.2
41 02 49.8 / 73 32 37.4
7:30-8:00 a.m.
5:31 p.m.
50-70 vpl (1 lane)
20-25 vpl (1 lane)
Intermittent
One time
Merritt Ramps AM_7
I-95 Ramps PM-3
Merritt Pkwy
I-95
PM
PM
1
4
Int. 14
35 (South
(SR 137Norwalk)
/ High Ridge Rd)
Int.
Entrance ramp
ramp
Entrance
NB
NB
41 06
06 11.5
50.0 // 73
73 25
32 53.3
28.5
41
5:00-6:00 p.m.
p.m.
5:00-6:00
20-30 vpl
vpl (1
(1 lane)
lane)
25-30
Intermittent
Intermittent
The head
head of
of the
the queue
queue was
was found
found where
where vehicles
vehicles waited
waited to
to merge
merge onto
onto I-95
the Parkway
The
Merritt
Ramps
PM_1
I-95
Ramps
PM-4
Merritt Pkwy
I-95
PM
PM
2
5
Int. 24
36 (US
(SR 1
106
/ Old Stamford
Rd)
Int.
/ Kings
Hwy)
Old Stamford
Rd
Exit
ramp
WB
NB
41 09
07 52.3
00.2 // 73
73 14
29 09.6
58.1
41
5:00-6:00 p.m.
p.m.
5:00-7:00
30-50 vpl
vpl (2
(1 lanes)
lane)
25-30
Intermittent
Intermittent
The head
head of
of the
the queue
queue was
was found
found at
at the
the signal
Parkway
ramps
(noofsignal)
The
at the
head
the ramp
Merritt
Ramps
PM_2
I-95
Ramps
PM-5
Merritt Pkwy
I-95
PM
PM
3
6
Int. 15
38 (US
(SR 7)
123 / New Canaan Ave)
Int.
New Canaan
Ave
Entrance
ramp
EB
NB
41 06
08 23.3
02.6 // 73
73 25
27 05.8
31.9
41
5:00-6:00 p.m.
p.m.
5:30-6:30
20-30 vpl
vpl (1
(1 lane)
lane)
30-60
Intermittent
Intermittent
The head
head of
of the
the queue
queue was
was found
found where
at the signal
at the
Parkway
ramps
The
vehicles
waited
to merge
onto I-95
Merritt
Ramps
PM_3
I-95
Ramps
PM-6
Merritt Pkwy
Merritt Pkwy
PM
AM
4
1
Willow Rd
Exit ramp
WB
SB
41 09 53.5 / 73 22 39.3
41 06 45.2 / 73 32 47.2
4:00-6:00 p.m.
8:45 a.m.
20-40 vpl (1 lane)
30-35 vpl (2 lanes)
Intermittent
One time
Merritt Ramps PM_4
Merritt Ramps AM_1
Merritt Pkwy
Merritt Pkwy
PM
AM
5
2
Entrance ramp
High Ridge Rd
NB
WB
41 09 49.5 / 73 22 54.3
41 06 45.0 / 73 32 46.6
4:00-5:00 p.m.
8:00-8:30 a.m.
20-30 vpl (1 lane)
50-60 vpl (2 lanes)
Intermittent
Intermittent
Merritt Ramps PM_5
Merritt Ramps AM_2
Merritt Pkwy
Merritt Pkwy
PM
AM
6
3
Weston Rd
Entrance ramp
WB
SB
41 09 46.0 / 73 21 25.6
41 06 12.4 / 73 33 55.6
5:41 p.m.
7:45-8:15 a.m.
25-30 vpl (1 lane)
20-25 vpl (1 lane)
One time
Intermittent
Merritt Ramps PM_6
Merritt Ramps AM_3
Merritt Pkwy
Merritt Pkwy
PM
AM
7
4
Int. 52 (SR 8)
Entrance ramp
Old Stamford Rd
NB
WB
41 14 16.3 / 73 09 35.8
41 07 07.3 / 73 29 56.1
4:33 p.m.
7:30-8:30 a.m.
70-75 vpl (1 lane)
50-60 vpl (1 lane)
One time
Intermittent
Merritt Pkwy
AM
5
Entrance ramp
SB
41 12 04.2 / 73 16 18.9
7:00-8:00 a.m.
50-100 vpl (1 lane)
Intermittent
Merritt Ramps AM_5
Merritt Pkwy
AM
6
Black Rock Tnpk
WB
41 12 08.2 / 73 16 08.7
7:30-8:30 a.m.
25-30 vpl (1 lane)
Intermittent
Merritt Ramps AM_6
Merritt Pkwy
AM
7
Entrance ramp
SB
41 14 56.0 / 73 04 48.2
7:30-8:00 a.m.
50-70 vpl (1 lane)
Intermittent
Merritt Ramps AM_7
Merritt Pkwy
PM
1
Entrance ramp
NB
41 06 50.0 / 73 32 28.5
5:00-6:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_1
Merritt Pkwy
PM
2
Old Stamford Rd
WB
41 07 00.2 / 73 29 58.1
5:00-6:00 p.m.
30-50 vpl (1 lane)
Intermittent
Merritt Ramps PM_2
Merritt Pkwy
PM
3
New Canaan Ave
EB
41 08 02.6 / 73 27 31.9
5:00-6:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_3
Merritt Pkwy
PM
4
Willow Rd
WB
41 09 53.5 / 73 22 39.3
4:00-6:00 p.m.
20-40 vpl (1 lane)
Intermittent
Merritt Ramps PM_4
Merritt Pkwy
PM
5
Entrance ramp
NB
41 09 49.5 / 73 22 54.3
4:00-5:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_5
Merritt Pkwy
PM
6
Weston Rd
WB
41 09 46.0 / 73 21 25.6
5:41 p.m.
25-30 vpl (1 lane)
One time
Merritt Ramps PM_6
One time
Merritt Ramps PM_7
Merritt Pkwy
PM
7
Int. 52 (SR 8)
Entrance ramp
NB
41 14 16.3 / 73 09 35.8
4:33 p.m.
70-75 vpl (1 lane)
Merritt Ramps PM_7
Merritt Ramps AM_4
41
EVENING DENSITY (MERRITT PKWY)
Density
SOUTHBOUND
29
30 / 27
16
4:30-5:00
10
19
21
19
5:00-5:30
13
5:30-6:00
7
13
13
12
N Ridge Rd
15
Lincoln Ave
13
Purchase St
17
I-287
4:00-4:30
19
Density
15
16
6:00-6:30
12
15
16
13
6:30-7:00
7
8
13
4:00-4:30
23
18
4:30-5:00
16
20
5:00-5:30
24
Density
28
Density
29
31
15
15
15
16
14
16
16
17
18
8
19
12
13
15
15
10
12
14
11
15
17
16
14
20
30
13
15
21
19
North St
28
Density
Old Mill Rd
27
Density
Round Hil Rd
26
Density
SR 120A (King St)
Density
Time
MERRITT PKWY
18
20
6:30-7:00
26
18
15
27
13
29
19
15
Colors
(white)
42
Density
< 31 pcplpm
31-40
41-62
> 62
23
21
16
16
28
NORTHBOUND
26
21
14
30 / 27
21
North St
18
Old Mill Rd
13
14
17
28
21
Round Hil Rd
17
N Ridge Rd
15
24
SR 120A (King St)
19
6:00-6:30
22
Lincoln Ave
29
Purchase St
5:30-6:00
I-287
Time
19
29
31
Density
34
16
4:30-5:00
12
23
5:00-5:30
5:30-6:00
18
22
Den Rd
14
North St
4:00-4:30
26
24
35
19
20
27
18
15
Density
36
19
32
24
18
21
37
18
20
28
25
6:00-6:30
16
25
24
6:30-7:00
14
13
10
12
11
4:00-4:30
24
26
37
40
41
4:30-5:00
22
128
SR 124 (South Ave)
33
Density
31
SOUTHBOUND
Density
Time
Density
Density
MERRITT PKWY
22
6:30-7:00
31
54
33
69
65
50
34
71
70
62
35
35
53
80
56
77
SR 124 (South Ave)
51
44
62
26
6:00-6:30
67
74
25
22
5:30-6:00
29
Den Rd
5:00-5:30
North St
Time
36
36
37
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
43
Density
SOUTHBOUND
6:00-6:30
6:30-7:00
25
23
40
Density
41
17
11
12
15
10
16
30
23
17
15
17
14
29
15
24
16
10
16
29
7
11
13
41
42
37
70
72
48
53
81
76
75
21
13
42
16
13
SR 57 (Weston Rd)
5:30-6:00
SR 124 (South Ave)
5:00-5:30
20
39
Density
SR 33 (Wilton Rd)
17
4:00-4:30
4:30-5:00
38
Density
Main Ave
37
Time
Density
US 7
Density
MERRITT PKWY
55
39
6:30-7:00
37
52
48
65
83
35
38
77
78
48
39
42
40
Colors
(white)
44
Density
< 31 pcplpm
31-40
41-62
> 62
81
71
77
42
41
SOUTHBOUND
88
SR 57 (Weston Rd)
6:00-6:30
41
77
SR 33 (Wilton Rd)
5:30-6:00
49
Main Ave
5:00-5:30
61
US 7
4:30-5:00
SR 124 (South Ave)
4:00-4:30
Time
42
Density
SOUTHBOUND
6:30-7:00
18
12
16
17
14
50
15
20
23
16
17
15
24
19
24
15
23
15
19
15
14
18
20
22
21
18
Density
51
52
30
17
29
18
25
32
29
21
24
SR 8
13
20
49
Density
Huntington Pkwy
10
48
Density
6:00-6:30
16
47
Density
SR 25
5:30-6:00
SR 57 (Weston Rd)
5:00-5:30
46
Density
SR 111 (Main St)
13
4:00-4:30
4:30-5:00
44
Density
Park Ave
42
Time
Density
SR 59 (Easton Tnpk)
Density
16
11
15
16
15
18
15
28
17
39
64
40
37
38
35
49
23
20
25
48
45
20
40
47
MERRITT PKWY
45
31
6:30-7:00
42
37
44
28
30
23
46
23
47
29
36
33
22
48
43
21
49
45
51
39
27
50
18
24
SR 8
37
SR 25
52
46
Huntington Pkwy
37
51
61
6:00-6:30
40
58
Note 1
SR 111 (Main St)
5:30-6:00
44
Note 1
Park Ave
5:00-5:30
Note 1: Incident-Related Data - Interpolated
SR 59 (Easton Tnpk)
4:30-5:00
SR 57 (Weston Rd)
4:00-4:30
Time
19
17
51
52
NORTHBOUND
Colors
(white)
Density
< 31 pcplpm
31-40
41-62
> 62
45
Density
SOUTHBOUND
53
Density
54
Density
55
56
15
4:30-5:00
20
23
7
15
5:00-5:30
27
5:30-6:00
29
6:00-6:30
25
6:30-7:00
19
14
10
Wellington Rd
19
Milford Pkwy
18
SR 110 (Main St)
17
SR 8
4:00-4:30
16
Density
17
21
57
14
18
21
17
21
12
14
13
21
9
10
18
15
4:00-4:30
23
21
20
19
21
4:30-5:00
31
24
25
21
5:00-5:30
22
SR 34 (Derby Ave)
52
Density
Density
Time
MERRITT PKWY
16
6:30-7:00
52
18
18
53
11
54
26
18
13
55
Colors
(white)
46
Density
< 31 pcplpm
31-40
41-62
> 62
21
29
16
15
56
NORTHBOUND
20
SR 34 (Derby Ave)
16
27
22
28
25
Wolf Harbor Rd
21
6:00-6:30
24
Milford Pkwy
25
SR 110 (Main St)
5:30-6:00
SR 8
Time
57
EVENING LEVEL-OF-SERVICE (MERRITT PKWY)
Level-of-Service
SOUTHBOUND
28
29
30 / 27
B
4:30-5:00
A
C
C
C
5:00-5:30
B
5:30-6:00
A
B
B
B
N Ridge Rd
B
Lincoln Ave
B
Purchase St
B
I-287
4:00-4:30
C
LOS
B
B
6:00-6:30
B
B
B
B
6:30-7:00
A
A
B
4:00-4:30
C
B
4:30-5:00
B
C
5:00-5:30
C
LOS
28
LOS
29
31
B
B
B
B
B
B
B
B
B
A
C
B
B
B
B
A
B
B
A
B
B
B
B
C
D
B
B
C
C
North St
27
LOS
Old Mill Rd
26
LOS
Round Hil Rd
Time
LOS
SR 120A (King St)
LOS
MERRITT PKWY
B
C
6:30-7:00
26
B
B
27
C
B
B
29
C
C
B
30 / 27
C
C
B
B
28
C
North St
B
Old Mill Rd
B
B
B
28
C
Round Hil Rd
B
N Ridge Rd
B
C
SR 120A (King St)
C
6:00-6:30
C
Lincoln Ave
D
Purchase St
5:30-6:00
I-287
Time
C
29
31
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
47
Level-of-Service
SOUTHBOUND
B
4:30-5:00
B
C
5:00-5:30
5:30-6:00
B
C
Den Rd
B
North St
4:00-4:30
C
C
35
C
C
D
B
B
LOS
36
C
D
C
B
C
37
B
C
D
C
6:00-6:30
B
C
C
6:30-7:00
B
B
A
B
A
4:00-4:30
C
C
E
E
E
4:30-5:00
C
F
SR 124 (South Ave)
34
LOS
33
LOS
31
LOS
LOS
Time
MERRITT PKWY
C
6:30-7:00
31
F
33
F
F
F
34
F
F
F
D
35
Colors
(white)
48
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
F
F
F
E
36
NORTHBOUND
F
SR 124 (South Ave)
F
E
F
C
6:00-6:30
F
F
C
C
5:30-6:00
D
Den Rd
5:00-5:30
North St
Time
37
Level-of-Service
SOUTHBOUND
6:30-7:00
C
LOS
40
41
B
A
B
B
A
B
D
C
42
B
B
B
D
B
C
B
A
B
D
A
A
B
E
E
E
F
F
F
F
F
F
F
C
B
B
B
B
SR 57 (Weston Rd)
6:00-6:30
C
39
LOS
SR 33 (Wilton Rd)
5:30-6:00
SR 124 (South Ave)
5:00-5:30
C
LOS
Main Ave
B
4:00-4:30
4:30-5:00
38
37
LOS
US 7
LOS
Time
MERRITT PKWY
F
E
6:30-7:00
37
F
F
F
F
D
38
F
F
F
39
F
E
F
F
F
F
SR 57 (Weston Rd)
6:00-6:30
E
SR 33 (Wilton Rd)
5:30-6:00
F
Main Ave
5:00-5:30
F
US 7
4:30-5:00
SR 124 (South Ave)
4:00-4:30
Time
E
40
41
42
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
49
Level-of-Service
SOUTHBOUND
B
B
B
50
B
C
C
B
B
B
C
C
C
B
C
B
C
B
B
B
C
C
C
B
LOS
51
52
D
B
D
B
C
D
D
C
C
B
A
B
B
B
B
B
D
B
4:00-4:30
E
F
E
E
E
D
F
C
4:30-5:00
Note 1: Incident-Related Data - Interpolated
A
C
C
F
E
C
E
F
6:30-7:00
SR 8
B
49
LOS
Huntington Pkwy
B
C
48
LOS
6:00-6:30
B
B
47
LOS
SR 25
5:30-6:00
SR 57 (Weston Rd)
5:00-5:30
A
46
LOS
SR 111 (Main St)
B
4:00-4:30
4:30-5:00
44
LOS
Park Ave
42
Time
LOS
SR 59 (Easton Tnpk)
LOS
MERRITT PKWY
D
6:30-7:00
42
E
44
D
D
C
46
C
47
NORTHBOUND
Colors
(white)
50
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
D
E
D
C
48
E
C
49
E
F
E
D
50
B
C
SR 8
E
SR 25
F
F
Huntington Pkwy
E
F
Park Ave
F
A
E
F
Note 1
SR 111 (Main St)
6:00-6:30
E
Note 1
A
SR 59 (Easton Tnpk)
5:30-6:00
E
5:00-5:30
SR 57 (Weston Rd)
Time
C
B
51
52
Level-of-Service
52
53
SOUTHBOUND
LOS
54
LOS
55
56
B
4:30-5:00
C
C
A
B
5:00-5:30
D
5:30-6:00
D
6:00-6:30
C
6:30-7:00
C
B
A
Wellington Rd
C
Milford Pkwy
B
SR 110 (Main St)
B
SR 8
4:00-4:30
B
LOS
B
C
57
B
B
C
B
C
B
B
B
C
A
A
B
B
4:00-4:30
C
C
C
C
C
4:30-5:00
D
C
C
C
5:00-5:30
C
SR 34 (Derby Ave)
Time
LOS
LOS
MERRITT PKWY
B
6:30-7:00
52
B
B
53
A
54
C
B
B
55
C
C
D
B
SR 34 (Derby Ave)
B
D
C
D
C
Wolf Harbor Rd
C
6:00-6:30
C
Milford Pkwy
C
SR 110 (Main St)
5:30-6:00
SR 8
Time
B
56
57
NORTHBOUND
Colors
(white)
LOS
A/B/C/D
D/E
E/F
F
Density
< 31 pcplpm
31-40
41-62
> 62
51
MAINLINE BOTTLENECKS (MERRITT PKWY EVENING)




Bottleneck #
Direction
Queue
Type
Head of Queue
(Lat/Long)
1
NB
Mainline
41 14 12 / 73 10 18
2
NB
Mainline
3
NB
4
NB
52
Time Period
Queue
Length
Photos
Int. 50 (SR 127 (White Plains Rd) Int. 47 (Park Ave)
4:00-6:30 p.m.
2-3 miles
Weaving/merging at SR 25 and traffic
entering at SR 127 (White Plains Rd)
Merritt_PM_1
41 13 47 / 73 14 22
Int. 47 (Park Ave)
4:00-6:30 p.m.
1-2 miles
Mainline
41 10 00 / 73 21 03
Int. 37 (SR 124 / South Ave)
4:00-7:00 p.m.
6-8 miles
Mainline
41 07 08 / 73 29 00
Int. 37 (SR 124 / South Ave)
Int. 33 (Den Rd)
4:00-7:00 p.m.
4-5 miles
Traffic entering at ramps from Easton
Turnpike and Park Ave
Weaving/merging at the series of
interchanges along this section of Merritt
Pkwy
Weaving/merging at the series of
interchanges along this section of Merritt
Pkwy
Merritt_PM_2
Merritt_PM_3
Merritt_PM_4
Merritt Pkwy
AM
1
Exit ramp
SB
41 06 45.2 / 73 32 47.2
8:45 a.m.
30-35 vpl (2 lanes)
One time
Merritt Ramps AM_1
Merritt Pkwy
AM
2
High Ridge Rd
WB
41 06 45.0 / 73 32 46.6
8:00-8:30 a.m.
50-60 vpl (2 lanes)
Intermittent
Merritt Ramps AM_2
Merritt Pkwy
AM
3
Entrance ramp
SB
41 06 12.4 / 73 33 55.6
7:45-8:15 a.m.
20-25 vpl (1 lane)
Intermittent
Merritt Pkwy
AM
4
Old Stamford Rd
WB
41 07 07.3 / 73 29 56.1
7:30-8:30 a.m.
50-60 vpl (1 lane)
RAMP AND SIDE ROAD QUEUES (MERRITT PKWY EVENING)
Merritt Ramps AM_3
Intermittent
Merritt Ramps AM_4
Merritt Ramps AM_5
Merritt Pkwy
AM
5
Entrance ramp
SB
41 12 04.2 / 73 16 18.9
7:00-8:00 a.m.
50-100 vpl (1 lane)
Intermittent
Merritt Pkwy
AM
6
Black Rock Tnpk
WB
41 12 08.2 / 73 16 08.7
7:30-8:30 a.m.
25-30 vpl (1 lane)
Intermittent
Merritt Ramps AM_6
Merritt Pkwy
AM
7
Entrance ramp
SB
Merritt Ramps AM_7
Interchange
Ramp / Side Road
Direction
Time
50-70 vpl (1 lane)
Queue Population
(vehicles per lane)
Intermittent
AM / PM Queue #
41 14 56.0 / 73 04 48.2
Head of Queue
(Lat/Long)
7:30-8:00 a.m.
Highway
Frequency
Notes
Photos
Merritt Pkwy
I-95
PM
AM
1
1
Int. 3 (Arch St)
Entrance ramp
Exit ramp
NB
SB
41 06 50.0 / 73 32 28.5
41 01 12.6 / 73 37 35.4
5:00-6:00 p.m.
8:00-9:00 a.m.
20-30 vpl (1 lane)
20-30 vpl (2 lanes)
Intermittent
Intermittent
Merritt Ramps PM_1
Merritt Pkwy
I-95
PM
AM
2
2
Int. 15 (US 7)
Old Stamford Rd
Entrance ramp
WB
SB
41 07 00.2 / 73 29 58.1
41 06 22.3 / 73 25 27.3
5:00-6:00 p.m.
7:00-9:00 a.m.
30-50 vpl (1 lane)
50-80 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps PM_2
I-95 Ramps AM_2
Merritt Pkwy
I-95
PM
AM
3
3
Int. 27 (SR 8 / SR 25)
New Canaan Ave
Entrance ramp
EB
SB
41 08 02.6 / 73 27 31.9
41 10 14.2 / 73 11 39.9
5:00-6:00 p.m.
7:00-9:00 a.m.
20-30 vpl (1 lane)
30-50 vpl (1 lane)
Intermittent
Intermittent
Merritt Ramps PM_3
I-95 Ramps AM_3
Merritt Pkwy
I-95
PM
AM
4
4
Int. 21 (I-287)
Willow Rd
Entrance ramp
WB
NB
41 09 53.5 / 73 22 39.3
40 59 26.4 / 73 39 47.9
4:00-6:00 p.m.
8:59 a.m.
20-40 vpl (1 lane)
Intermittent
One time
The head of the queue was found where
vehicles
waited
to merge
onto I-95 (possibly atypical
at the signal
at the
Parkway
ramps
congestion)
Merritt Ramps PM_4
I-95 Ramps AM_4
Merritt Pkwy
PM
5
Entrance ramp
NB
41 09 49.5 / 73 22 54.3
4:00-5:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_5
I-95
Merritt Pkwy
PM
PM
1
6
Int. 27 (SR 8 / SR 25)
Exit ramp
Weston Rd
NB
WB
41 10 16.4 / 73 11 29.4
41 09 46.0 / 73 21 25.6
4:15-6:45 p.m.
5:41 p.m.
40-60 vpl (1 lane)
25-30 vpl (1 lane)
Intermittent
One time
I-95 Ramps PM-1
Merritt Ramps PM_6
I-95
Merritt Pkwy
PM
PM
2
7
Int. 6 (West Ave)
Int. 52 (SR 8)
Entrance ramp
Entrance ramp
NB
NB
41 02 39.0 / 73 33 13.9
41 14 16.3 / 73 09 35.8
5:00-6:00 p.m.
4:33 p.m.
20-25 vpl (1 lane)
70-75 vpl (1 lane)
Intermittent
One time
the Parkway (congestion
I-95 Ramps PM-2
Merritt Ramps PM_7
I-95
PM
3
Entrance ramp
SB
41 02 49.8 / 73 32 37.4
5:31 p.m.
20-25 vpl (1 lane)
One time
I-95 Ramps PM-3
I-95
PM
4
Entrance ramp
NB
41 06 11.5 / 73 25 53.3
5:00-6:00 p.m.
25-30 vpl (1 lane)
Intermittent
I-95 Ramps PM-4
I-95
PM
5
Exit ramp
NB
41 09 52.3 / 73 14 09.6
5:00-7:00 p.m.
25-30 vpl (2 lanes)
Intermittent
I-95 Ramps PM-5
I-95
PM
6
Int. 15 (US 7)
Entrance ramp
NB
41 06 23.3 / 73 25 05.8
5:30-6:30 p.m.
30-60 vpl (1 lane)
Intermittent
I-95 Ramps PM-6
Merritt Pkwy
AM
1
Exit ramp
SB
41 06 45.2 / 73 32 47.2
8:45 a.m.
30-35 vpl (2 lanes)
One time
Merritt Ramps AM_1
Merritt Pkwy
AM
2
High Ridge Rd
WB
41 06 45.0 / 73 32 46.6
8:00-8:30 a.m.
50-60 vpl (2 lanes)
Intermittent
Merritt Ramps AM_2
Merritt Pkwy
AM
3
Entrance ramp
SB
41 06 12.4 / 73 33 55.6
7:45-8:15 a.m.
20-25 vpl (1 lane)
Intermittent
Merritt Ramps AM_3
Merritt Pkwy
AM
4
Old Stamford Rd
WB
41 07 07.3 / 73 29 56.1
7:30-8:30 a.m.
50-60 vpl (1 lane)
Intermittent
Merritt Ramps AM_4
Merritt Ramps AM_5
Merritt Pkwy
AM
5
Entrance ramp
SB
41 12 04.2 / 73 16 18.9
7:00-8:00 a.m.
50-100 vpl (1 lane)
Intermittent
Merritt Pkwy
AM
6
Black Rock Tnpk
WB
41 12 08.2 / 73 16 08.7
7:30-8:30 a.m.
25-30 vpl (1 lane)
Intermittent
Merritt Ramps AM_6
Merritt Pkwy
AM
7
Entrance ramp
SB
41 14 56.0 / 73 04 48.2
7:30-8:00 a.m.
50-70 vpl (1 lane)
Intermittent
Merritt Ramps AM_7
Merritt Pkwy
PM
1
Entrance ramp
NB
41 06 50.0 / 73 32 28.5
5:00-6:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_1
Merritt Pkwy
PM
2
Old Stamford Rd
WB
41 07 00.2 / 73 29 58.1
5:00-6:00 p.m.
30-50 vpl (1 lane)
Intermittent
Merritt Ramps PM_2
Merritt Pkwy
PM
3
New Canaan Ave
EB
41 08 02.6 / 73 27 31.9
5:00-6:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_3
Merritt Pkwy
PM
4
Willow Rd
WB
41 09 53.5 / 73 22 39.3
4:00-6:00 p.m.
20-40 vpl (1 lane)
Intermittent
Merritt Ramps PM_4
Merritt Pkwy
PM
5
Entrance ramp
NB
41 09 49.5 / 73 22 54.3
4:00-5:00 p.m.
20-30 vpl (1 lane)
Intermittent
Merritt Ramps PM_5
Merritt Pkwy
PM
6
Weston Rd
WB
41 09 46.0 / 73 21 25.6
5:41 p.m.
25-30 vpl (1 lane)
One time
Merritt Ramps PM_6
One time
Merritt Ramps PM_7
Merritt Pkwy
PM
7
Int. 52 (SR 8)
Entrance ramp
NB
41 14 16.3 / 73 09 35.8
4:33 p.m.
70-75 vpl (1 lane)
53

I-95 Corridor Congestion Relief Study

Transcription

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