New Haven County, CT

891 public highway bridges

New Haven County Bridge Snapshot

New Haven County, Connecticut contains 891 public highway bridges in the FHWA National Bridge Inventory. Roughly 25.7% are rated “Good,” 45.2% “Fair,” 2.6% “Poor,” and 2.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CT are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

891
Total Bridges
25.7%
Good
2.6%
Poor
2.6%
Structurally Deficient

Condition Distribution

Good
25.7% (229)
Fair
45.2% (403)
Poor
2.6% (23)
SD
2.6% (23)

All Bridges (891)

INTERSTATE-91

Fair

Over: CLINTON AVENUE

2.1 MI N OF I-95, New Haven, CT

Built 1965 Load: 63.8 t ADT: 137,300

HUNTINGDON AVENUE

Fair

Over: DOT RAILROAD

.3 M WEST OF ROUTE 847, New Haven, CT

Built 1956 Load: 63.8 t ADT: 24,900

I-84 EB COLLECTOR

Fair

Over: WASHINGTON STREET

VICINITY OF EXIT 23, New Haven, CT

Built 1978 Load: 64.4 t ADT: 20,600

INTERSTATE-91 NB

Fair

Over: BEE STREET

.2 MI SOUTH OF I-691 EB, New Haven, CT

Built 1965 Load: 65.4 t ADT: 22,500

MCDERMOTT ROAD

Fair

Over: LITTLE RIVER

0.47 M. S OF Rte 103, New Haven, CT

Built 1960 Load: 67.4 t ADT: 335

ROUTE 67

Fair

Over: LITTLE RIVER

0.6 MILE WEST OF ROUTE 8, New Haven, CT

Built 1934 Load: 67.9 t ADT: 17,200

SEYMOUR AVENUE

Fair

Over: ROUTE 8

0.9 MI N OF ROUTE 34, New Haven, CT

Built 1952 Load: 70.7 t ADT: 9,096

SR 844

Fair

Over: MAD RIVER

.2 MILE EAST OF ROUTE 69, New Haven, CT

Built 1935 Load: 71.1 t ADT: 9,700

US ROUTE 1

Fair

Over: QUEACH BROOK

0.7 MI S OF I-95, New Haven, CT

Built 2009 Load: 75.1 t ADT: 15,500

WHITE BIRCH DRIVE

Fair

Over: EAST RIVER

0.2 MI N OF NUT PLAINS RD, New Haven, CT

Built 1999 Load: 79.4 t ADT: 108

ROUTE 8 NORTHBOUND

Fair

Over: WEST MAIN STREET NO.1

AT EXIT 33, New Haven, CT

Built 1965 Load: 80.7 t ADT: 35,200

INTERSTATE-691

Fair

Over: ABANDONED RAILROAD LINE

0.2 MI W OF ROUTE 5, New Haven, CT

Built 1971 Load: 86.2 t ADT: 78,500

CHAPEL STREET #1

Fair

Over: WEST RIVER

0.1 MILE EAST OF YALE AVE, New Haven, CT

Built 1991 Load: 89.6 t ADT: 4,400

YORK STREET

Fair

Over: BROOK

0.2 MI W OF US ROUTE 1, New Haven, CT

Built 1968 Load: 97.2 t ADT: 264

GUNTOWN ROAD

Fair

Over: LONG MEADOW POND BROOK

AT MIDDLEBURY - OXFORD TL, New Haven, CT

Built 1960 Load: 97.2 t ADT: 1,300

HOGS BACK ROAD

Fair

Over: LITTLE RIVER

50 FEET SOUTH OF ROUTE 67, New Haven, CT

Built 1954 Load: 97.2 t ADT: 670

BALDWIN AVE&BEE ST

Fair

Over: SPOON SHOP BROOK

AT JCT. BEE & BALDWIN STS, New Haven, CT

Built 1950 Load: 97.2 t ADT: 2,923

ROUTE 17

Fair

Over: BROOK

0.8 MI N OF ROUTE 80, New Haven, CT

Built 1970 Load: 97.2 t ADT: 9,800

INTERSTATE-91

Fair

Over: BROOK

3.4 MI N OF I-95, New Haven, CT

Built 1965 Load: 97.2 t ADT: 120,200

INTERSTATE-95

Fair

Over: WEPAWAUG RIVER

325 FT S OF ROUTE 121, New Haven, CT

Built 1958 Load: 99.9 t ADT: 113,500

ROUTE 15

Fair

Over: BALDWINS POND

OVER BALDWINS POND, New Haven, CT

Built 1946 Load: 99.9 t ADT: 24,600

ROUTE 34

Fair

Over: WEPAWAUG RIVER

0.3 MI E OF ROUTE 15, New Haven, CT

Built 1855 Load: 99.9 t ADT: 34,600

INTERSTATE-91&RT15

Fair

Over: WILLOW BROOK

.12 MI NORTH OF E MAIN ST, New Haven, CT

Built 1964 Load: 99.9 t ADT: 147,500

INTERSTATE-91

Fair

Over: SPOON SHOP BROOK

I-91NB,200' S. OF EXIT 18, New Haven, CT

Built 1965 Load: 99.9 t ADT: 91,200

INTERSTATE-691 EB

Fair

Over: SPOON SHOP BROOK

0.2 MI W OF ROUTE 66, New Haven, CT

Built 1965 Load: 99.9 t ADT: 23,300

INTERSTATE-691 WB

Fair

Over: SPOON SHOP BROOK

0.2 MI WEST OF ROUTE 66, New Haven, CT

Built 1965 Load: 99.9 t ADT: 23,200

INTERSTATE-691

Fair

Over: HARBOR BROOK

ENTER @ BUNKER AVE PARK, New Haven, CT

Built 1971 Load: 99.9 t ADT: 82,700

ROUTE 15

Fair

Over: MILL BROOK

1.0 MI N OF ROUTE 10, New Haven, CT

Built 1943 Load: 99.9 t ADT: 72,600

INTERSTATE-691 EB

Fair

Over: WILLOW BROOK

315 FT E OF ROUTE 15, New Haven, CT

Built 1965 Load: 99.9 t ADT: 22,500

I-691 WB AND RAMPS

Fair

Over: WILLOW BROOK

I-691 WB EXIT NO. 9, New Haven, CT

Built 1965 Load: 99.9 t ADT: 42,500

I-91 NB RAMP 016

Fair

Over: LITTLE RIVER

I-91 NB EXIT NO 8, New Haven, CT

Built 1965 Load: 99.9 t ADT: 16,600

INTERSTATE-91

Fair

Over: LITTLE RIVER

0.2 MI N OF ROUTE 17, New Haven, CT

Built 1965 Load: 99.9 t ADT: 50,400

INTERSTATE-84

Fair

Over: WELTON BROOK

0.8 MI EAST MIDDLEBURY TL, New Haven, CT

Built 1965 Load: 99.9 t ADT: 83,400

HUNTINGDON AVENUE

Fair

Over: HANCOCK BROOK

0.2 MILES W OF SR 847, New Haven, CT

Built 1940 Load: 99.9 t ADT: 24,900

FREIGHT STREET

Fair

Over: NAUGATUCK RIVER

JCT FREIGHT & RIVERSIDE, New Haven, CT

Built 1925 Load: 99.9 t ADT: 7,100

I-84, RAMPS & LOCA

Fair

Over: MAD RIVER

0.1 MI WEST OF EXIT 23 EB, New Haven, CT

Built 1980 Load: 99.9 t ADT: 105,300

RT8 & RMPS 139,140

Fair

Over: BEACON HILL BROOK

AT EXIT 25, RTE 8, New Haven, CT

Built 1981 Load: 99.9 t ADT: 48,000

INTERSTATE I-84

Fair

Over: HOP BROOK

0.07 MI WEST BRG# 01171, New Haven, CT

Built 1964 Load: 99.9 t ADT: 73,700

INTERSTATE 95

Fair

Over: EAST BRANCH WEST RIVER

900 FT SOUTH OF ROUTE 77, New Haven, CT

Built 1958 Load: 99.9 t ADT: 56,800

I-84 EB & EXIT 23

Good

Over: MAD RIVER

1600'± EAST OF ROUTE 69, New Haven, CT

Load: 16.7 t ADT: 3,580

SR 729 (BROADWAY)

Good

Over: AMTRAK RAILROAD

0.2 MI E OF US ROUTE 5, New Haven, CT

Built 1988 Load: 20.4 t ADT: 8,100

LAMBERT ROAD

Good

Over: RACE BROOK

0.1 MI S OF ROUTE 152, New Haven, CT

Built 1946 Load: 21.4 t ADT: 2,200

ROUTE 142

Good

Over: FARM RIVER

0.2 MI W OF ROUTE 100, New Haven, CT

Built 1973 Load: 26.6 t ADT: 11,900

BRIDGE STREET

Good

Over: WEPAWAUG RIVER

0.2 MI S OF US ROUTE 1, New Haven, CT

Built 1997 Load: 26.6 t ADT: 2,330

SR 707

Good

Over: LAKE WHITNEY

2M S OF JCT RT10 & SR 707, New Haven, CT

Built 1992 Load: 27.2 t ADT: 11,800

I-95 TR 813

Good

Over: EAST STREET & PWRR

AT WEST END OF Q-BRIDGE, New Haven, CT

Built 1958 Load: 27.9 t ADT: 17,200

MOOSE HILL ROAD

Good

Over: AMTRAK RAILROAD

0.1 MI N OF ROUTE 146, New Haven, CT

Built 1925 Load: 28.5 t ADT: 650

ROUTE 150

Good

Over: QUINNIPIAC RIVER

600 FT E OF ROUTE 15, New Haven, CT

Built 1991 Load: 29.5 t ADT: 8,500

WEST MAIN STREET

Good

Over: WEPAWAUG RIVER

0.3 MI N OF ROUTE 162, New Haven, CT

Built 1928 Load: 30.5 t ADT: 8,470

ROUTE 69

Good

Over: SARGENT RIVER

2.8 MI N OF ROUTE 15, New Haven, CT

Built 1988 Load: 30.5 t ADT: 5,600

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial