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)

FACTORY WALK

Unknown

Over: ROUTE 73

150' EAST OF WATERTOWN TL, New Haven, CT

Built 1900 ADT: 6,700

ROUTE 40 NB

Unknown

Over: I-91 & TR 806,RTE 40-007

0.4 MI N OF I-91 NB, New Haven, CT

Built 1972 ADT: 9,760

ROUTE 40 NB RAMP 0

Unknown

Over: I-91 NB TR 806

0.6 MI W OF ROUTE 103, New Haven, CT

Built 1972 ADT: 5,500

I-91 TR 806

Unknown

Over: INTERSTATE-91

.30M N OF NB JCT NB RTE40, New Haven, CT

Built 1972 ADT: 85,200

ROUTE 40 NB

Unknown

Over: US ROUTE 5

AT EXIT 1 NORTHBOUND, New Haven, CT

Built 1972 ADT: 12,300

ROUTE 40 SB

Unknown

Over: US ROUTE 5

AT ON RAMP FOR EXIT 1, New Haven, CT

Built 1972 ADT: 12,300

PEDESTRIAN WALK

Unknown

Over: ROUTE 10

0.7 MI N OF ROUTE 63, New Haven, CT

Built 1968 ADT: 13,769

ROUTE 40 SB

Unknown

Over: ROUTE 15 (WILBUR CROSS)

1.8 MILES NORTH OF I-91, New Haven, CT

Built 1976 ADT: 70,400

ROUTE 40 NB

Unknown

Over: ROUTE 15 (WILBUR CROSS)

1.8 MI NORTH OF I-91, New Haven, CT

Built 1976 ADT: 66,700

ROUTE 22

Unknown

Over: ROUTE 40

0.9 MI S OF ROUTE 10, New Haven, CT

Built 1976 ADT: 23,000

ROUTE 40 SB

Unknown

Over: ROUTE 22 & MILL RIVER

0.3 MILE S. OF ROUTE 10, New Haven, CT

Built 1976 ADT: 4,200

ROUTE 40 NB

Unknown

Over: ROUTE 22 & MILL RIVER

0.3 MILE S. OF ROUTE 10, New Haven, CT

Built 1976 ADT: 4,200

ROUTE 40 SB

Unknown

Over: ROUTE 10

3MI NORTHOF INTERSTATE 91, New Haven, CT

Built 1976 ADT: 12,900

RIVER ROAD #1

Unknown

Over: INTERSTATE 84

I-84 EXIT 13, New Haven, CT

Built 1978 ADT: 73,400

BALDWIN STREET #1

Unknown

Over: I-84, RAMPS & LOCAL RDS

BETWEEN I84 EXIT 23 & 24, New Haven, CT

Built 1978 ADT: 15,100

ROUTE 69

Unknown

Over: INTERSTATE 84

AT EXIT23 INTERSTATE 84 W, New Haven, CT

Built 2018 ADT: 5,500

SR721-NO MAIN ST

Unknown

Over: ROUTE 8

.8M N OF RT 67 (EX 22,RT8, New Haven, CT

Built 1981 ADT: 52,700

ROUTE 8

Unknown

Over: RTE 42 & NAUGATUCK RIVER

RTE 8 NEAR EXIT 23, New Haven, CT

Built 1981 ADT: 8,200

LOPUS ROAD

Unknown

Over: ROUTE 8

BET. RTE 8 EXIT 23 & 24, New Haven, CT

Built 1981 ADT: 47,400

ROUTE 8 SOUTHBOUND

Unknown

Over: MNRR, NAUGTCK RV

RTE 8 EXIT 24, New Haven, CT

Built 1981 ADT: 3,000

ROUTE 8 NORTHBOUND

Unknown

Over: METRO NORTH & NAUGTCK RV

RTE 8 EXIT 24, New Haven, CT

Built 1981 ADT: 3,000

ROUTE 10

Unknown

Over: INTERSTATE 691

I-691 EXIT 3, New Haven, CT

Built 1984 ADT: 50,300

PADDOCK AVENUE

Unknown

Over: ROUTE 15

1/3 MI SOUTH OF I-91, New Haven, CT

Built 1946 ADT: 75,800

AMTRAK RAILROAD

Unknown

Over: ROUTE 146

1.4 MI E OF US ROUTE 1, New Haven, CT

Built 1900 ADT: 4,600

AMTRAK RAILROAD

Unknown

Over: ROUTE 146

.24 MI W OF NEW QUARRY RD, New Haven, CT

Built 1917 ADT: 1,500

DICKERMAN ROAD

Unknown

Over: INTERSTATE-691

0.5 MI WEST OF ROUTE 10, New Haven, CT

Built 1986 ADT: 55,500

ABANDONED RAILROAD

Unknown

Over: INTERSTATE-691

1 MI E OF EXIT 2 RTE 691, New Haven, CT

Built 1987 ADT: 55,500

PECK LANE

Unknown

Over: INTERSTATE-691

0.7 MI WEST OF EXIT 3, New Haven, CT

Built 1986 ADT: 55,500

US ROUTE 5 NB

Unknown

Over: ROUTE 15

1.2 MILES NORTH OF I-691, New Haven, CT

Built 1946 ADT: 24,600

WOODWARD AVENUE

Unknown

Over: INTERSTATE-95

1.6 MI N OF I-91, New Haven, CT

Built 2006 ADT: 89,600

ROUTE 100

Unknown

Over: US ROUTE 1 & AMTRAK RR

0.1 MILE SOUTH OF I-95, New Haven, CT

Built 1992 ADT: 25,100

I-84 RAMP 059

Unknown

Over: I-84 WESTBOUND ON-RAMP

EXIT 22 I-84 WEST BOUND, New Haven, CT

Built 1997 ADT: 14,800

I-84 EB EXIT 23 ON

Unknown

Over: I-84 EB EXIT 25 OFF RAMP

AT INTER WITH ROUTE 69, New Haven, CT

Built 2018 ADT: 5,500

INTERSTATE 91 NB

Unknown

Over: SR 724 Eastbound

AT I-95/I-91/Rte 34 Inter, New Haven, CT

Built 2015 ADT: 26,700

I-95 SB RAMP 347A

Unknown

Over: INTERSTATE-95

0.1 MI S OF ROUTE 337, New Haven, CT

Built 2006 ADT: 89,600

PEDESTRIAN CROSSNG

Unknown

Over: ROUTE 10

320 FT S OF ROUTE 34, New Haven, CT

Built 2006 ADT: 24,700

US ROUTE 1

Fair

Over: METRO NORTH RAILROAD

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

Built 1933 Load: 14.3 t ADT: 13,536

QUINNIPIAC STREET

Fair

Over: QUINNIPIAC RIVER

150 FT E. OF ROUTE 15, New Haven, CT

Built 1938 Load: 18.1 t ADT: 12,500

ROUTE 8 SOUTHBOUND

Fair

Over: BANK & S.LEONARD STREETS

AT EXIT 30 ROUTE 8 SB, New Haven, CT

Built 1965 Load: 18.8 t ADT: 23,800

HALL AVENUE

Fair

Over: AMTRAK RAILROAD

500' E OF ROUTE 71, New Haven, CT

Built 1946 Load: 19.4 t ADT: 7,200

ROUTE 67

Fair

Over: BLADENS RIVER

0.9 MI E OF ROUTE 8, New Haven, CT

Built 1928 Load: 20.4 t ADT: 11,100

US ROUTE 1

Fair

Over: METRO NORTH RAILROAD

AT INT. WITH STATE ST. N, New Haven, CT

Built 1900 Load: 20.7 t ADT: 7,100

I-91 SB & RAMP #13

Fair

Over: EAST STREET

1.2 MI N I-95, New Haven, CT

Built 1965 Load: 20.7 t ADT: 73,400

ROUTE 172

Fair

Over: POMPERAUG RIVER

I 84 EXIT 14 & 1 MILE NOR, New Haven, CT

Built 1939 Load: 21.1 t ADT: 7,000

ROUTE 40 SB

Fair

Over: CSX RR, QUINNIPIAC RIVER

0.6 MI N OF I-91 NB, New Haven, CT

Built 1972 Load: 21.1 t ADT: 22,200

ROUTE 42

Fair

Over: NAUGATUCK RIVER AND MNRR

0.4 MILE WEST OF ROUTE 8, New Haven, CT

Built 1966 Load: 21.4 t ADT: 7,100

ROUTE 142

Fair

Over: FARM RIVER

.75 MI EAST OF ROUTE 704, New Haven, CT

Built 1942 Load: 22.0 t ADT: 4,500

RIVER ROAD

Fair

Over: HAMMONASSET RIVER

0.1 MI S OF NOD ROAD, New Haven, CT

Built 1935 Load: 22.4 t ADT: 2,833

SR 736 - BUCKINGHA

Fair

Over: GULF POND

0.4 MI E OF ROUTE 162, New Haven, CT

Built 1951 Load: 23.0 t ADT: 5,300

HORTON HILL RD.

Fair

Over: MARKS BROOK

.13 mi. north of Route 63, New Haven, CT

Built 1940 Load: 23.0 t ADT: 2,700

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.