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)

DUTTON ROAD

Good

Over: LITTLE RIVER

100 FT SOUTH OF ROUTE 67, New Haven, CT

Built 2022 Load: 68.4 t ADT: 240

HUBBARD ROAD

Good

Over: WEST RIVER

0.2 MI W OF ROUTE 77, New Haven, CT

Built 2007 Load: 69.3 t ADT: 2,362

ROUTE 150

Good

Over: WHARTON BROOK

1.5 MI NE OF I-91, New Haven, CT

Built 2019 Load: 76.1 t ADT: 8,500

ROUTE 80

Good

Over: FARM RIVER

1.2 MI E OF ROUTE 100, New Haven, CT

Built 2020 Load: 79.7 t ADT: 12,100

INTERSTATE-84 & Pl

Good

Over: BEAVER POND BROOK

.1MI E OF HARPRS FERRY RD, New Haven, CT

Built 2018 Load: 83.9 t ADT: 92,200

ROUTE 69

Good

Over: MAD RIVER

0.5 MI S OF ROUTE 322, New Haven, CT

Built 2021 Load: 91.4 t ADT: 12,400

DERBY-MILFORD ROAD

Good

Over: WEPAWAUG RIVER

50 FT N OF ROUTE 121, New Haven, CT

Built 2019 Load: 92.0 t ADT: 7,200

KNOTTER DRIVE

Good

Over: JUDD BROOK

0.2 MI S OF I-691, New Haven, CT

Built 1971 Load: 92.3 t ADT: 3,638

HEATHERWOOD DRIVE

Good

Over: BROOK

0.2 MI E OF SUMMER HILL, New Haven, CT

Built 2022 Load: 97.2 t ADT: 399

BEACON VALLEY ROAD

Good

Over: BEACON HILL BROOK

0.3 MI S OF ROUTE 8, New Haven, CT

Built 1933 Load: 97.2 t ADT: 2,600

AUTUMN RIDGE ROAD

Good

Over: RIGGS STREET BROOK

330 FT E OF RIGGS STREET, New Haven, CT

Built 1994 Load: 97.2 t ADT: 39

INTERSTATE-95

Good

Over: FARM RIVER

0.3 MI N OF ROUTE 100, New Haven, CT

Built 1958 Load: 99.9 t ADT: 103,000

INTERSTATE-95

Good

Over: BRANFORD RIVER

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

Built 1958 Load: 99.9 t ADT: 70,500

ROUTE 15

Good

Over: WILMOT BROOK

1.0 MI S OF ROUTE 10, New Haven, CT

Built 1949 Load: 99.9 t ADT: 77,800

INTERSTATE-691

Good

Over: SODOM BROOK

0.4 MI E OF ROUTE 71, New Haven, CT

Built 1971 Load: 99.9 t ADT: 61,100

HARPERS FERRY ROAD

Good

Over: BEAVER POND BROOK

NORTH OF I-84 OVERPASS, New Haven, CT

Built 1952 Load: 99.9 t ADT: 12,900

SR 486 (AIRPORT RD

Good

Over: EIGHT MILE BROOK

100' EAST OF JCT RTE 188, New Haven, CT

Built 1975 Load: 99.9 t ADT: 3,000

PLANK ROAD EAST

Good

Over: BEAVER POND BROOK

175 FT W OF SCOTT ROAD, New Haven, CT

Built 2018 Load: 99.9 t ADT: 2,550

WAITE STREET

Poor

Over: LAKE WHITNEY

0.2 MI EAST OF MATHER ST, New Haven, CT

Built 1935 Load: 21.4 t ADT: 2,000

WILLOW STREET

Poor

Over: WILLOW BROOK

0.1 MI EAST OF ROUTE 10, New Haven, CT

Built 1924 Load: 22.7 t ADT: 488

INTERSTATE-95

Poor

Over: METRO NORTH RAILROAD

0.23 MI NORTH OF FIRST AV, New Haven, CT

Built 1956 Load: 23.7 t ADT: 121,500

TOELLES ROAD

Poor

Over: QUINNIPIAC RIVER

100FT E OF ROUTE 15, New Haven, CT

Built 1982 Load: 25.3 t ADT: 8,703

NAUGATUCK AVENUE

Poor

Over: METRO NORTH RAILROAD

100' NORTH OF I-95, New Haven, CT

Built 1929 Load: 25.4 t ADT: 3,790

ROUTE 40 NB

Poor

Over: CSX RR, QUINNIPIAC RIVER

0.6 MI N OF 1-91 SB, New Haven, CT

Built 1972 Load: 29.9 t ADT: 20,500

CONNELLY PARKWAY

Poor

Over: MILL RIVER

0.2 MI E OF ROUTE 10, New Haven, CT

Built 1940 Load: 30.0 t ADT: 2,900

ROUTE 8 SOUTHBOUND

Poor

Over: RIVERSIDE ST-SUNNYSIDE

ROUTE 8 SOUTH OF I-84, New Haven, CT

Built 1966 Load: 31.7 t ADT: 16,900

QUINNIPIAC STREET

Poor

Over: WALLACE RACEWAY

0.2 MI E OF ROUTE 15, New Haven, CT

Built 1915 Load: 32.7 t ADT: 12,500

CENTER STREET

Poor

Over: HARBOR BROOK

250 FT NO OF PRATT STREET, New Haven, CT

Built 1871 Load: 32.7 t ADT: 6,186

ROUTE 146

Poor

Over: WEST RIVER

0.4 MI W OF ROUTE 77, New Haven, CT

Built 1910 Load: 33.7 t ADT: 5,500

ROUTE 15 NB

Poor

Over: QUINNIPIAC RIVER

1 MI NO OF JCT ROUTE 150, New Haven, CT

Built 1946 Load: 34.5 t ADT: 33,700

SACKETT POINT ROAD

Poor

Over: QUINNIPIAC RIVER

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

Built 1936 Load: 35.0 t ADT: 15,090

ROUTE 8 SOUTHBOUND

Poor

Over: NAUGATUCK RV-LOCAL ROADS

.27 MI NORTH OF TOWN LINE, New Haven, CT

Built 1966 Load: 36.6 t ADT: 27,600

HUMPHREY STREET

Poor

Over: MILL RIVER

0.1 MI E OF I-91, New Haven, CT

Built 1908 Load: 40.2 t ADT: 4,100

SR 745 KIMBERLY AV

Poor

Over: WEST RIVER

0.2 MI W OF I-95, New Haven, CT

Built 1969 Load: 41.1 t ADT: 16,000

ROUTE 337

Poor

Over: MORRIS CREEK

2.8 MI S. OF US ROUTE 1, New Haven, CT

Built 1936 Load: 41.4 t ADT: 2,600

ROUTE 40 SB

Poor

Over: AMTRAK RAILROAD

0.5 MILES N OF I-91, New Haven, CT

Built 1971 Load: 41.7 t ADT: 23,200

CLAPBOARD HILL RD

Poor

Over: EAST RIVER

.1 MI E OF EAST RIVER RD, New Haven, CT

Built 1950 Load: 42.8 t ADT: 3,000

EAGLE STREET

Poor

Over: NAUGATUCK RIVER

JCT OF EAGLE ST & SR 847, New Haven, CT

Built 1956 Load: 47.3 t ADT: 3,007

NORTHFORD ROAD

Poor

Over: MUDDY RIVER

0.5 MI S OF I-91, New Haven, CT

Built 1938 Load: 55.1 t ADT: 2,861

FORT PATH ROAD

Poor

Over: AMTRAK RAILROAD

0.3 MI SOUTH OF I-95, New Haven, CT

Built 1910 Load: 56.5 t ADT: 535

ROUTE 162

Poor

Over: TURTLE CREEK

0.7 MI E OF ROUTE 736, New Haven, CT

Built 1971 Load: 97.2 t ADT: 17,900

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.