New Haven County, CT

891 public highway bridges

New Haven County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, New Haven County, Connecticut contains 891 public highway bridges. Roughly 25.7% are rated “Good,” 45.2% “Fair,” and 2.6% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

891
Total Bridges
25.7%
Good
45.2%
Fair
2.6%
Poor Condition

Condition Distribution

Good
25.7% (229)
Fair
45.2% (403)
Poor
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.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.