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)

Sort:

NOROTON AVENUE

Over: INTERSTATE 95

AT EXIT 10, New Haven, CT

Built 1958 ADT: 119,100

I-95 & I-95 RAMP 1

Over: I-95 RAMPS 115 & 117

1.7 MI N OF ROUTE 130, New Haven, CT

Built 1957 ADT: 1,600

PLAINS ROAD NO. 1

Over: INTERSTATE-95

0.9 MI S OF SR 796, New Haven, CT

Built 1957 ADT: 92,700

HIGH STREET

Over: I-95 & I-95 SB TR 807

0.1 MI S OF SR 796, New Haven, CT

Built 1957 ADT: 7,000

INTERSTATE-95

Over: SR 796 (MILFORD PARKWAY)

I-95 EXIT NO 38, New Haven, CT

Built 1957 ADT: 35,200

WEST RIVER STREET

Over: INTERSTATE-95

0.2 MI S OF ROUTE 121, New Haven, CT

Built 1958 ADT: 113,500

INTERSTATE-95

Over: ROUTE 121

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

Built 1958 ADT: 6,800

FOREST ROAD

Over: INTERSTATE-95

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

Built 1958 ADT: 113,500

INTERSTATE-95

Over: US ROUTE 1

EXIT 39A & 39B I-95, New Haven, CT

Built 1958 ADT: 24,900

QUARRY ROAD

Over: INTERSTATE-95

1.7 MI N OF US ROUTE 1, New Haven, CT

Built 1958 ADT: 107,000

MARSH HILL ROAD

Over: I-95 & I-95 RAMP 352

0.8 MI S OF US1, New Haven, CT

Built 2001 ADT: 5,500

MORGAN LANE

Over: INTERSTATE 95

1.2 MI S OF ROUTE 162, New Haven, CT

Built 1957 ADT: 107,900

INTERSTATE 95

Over: ROUTE 162

I-95 AT EXIT 42, New Haven, CT

Built 2005 ADT: 18,800

STEVENS AVENUE

Over: INTERSTATE 95

0.7 MI N OF ROUTE 162, New Haven, CT

Built 1957 ADT: 114,100

INTERSTATE-95

Over: SR 745 (FIRST AVENUE)

0.9 MI S OF ROUTE 10, New Haven, CT

Built 1956 ADT: 16,600

INTERSTATE-95

Over: WEST RIVER & SR 745

0.5 MI S OF RT 10, New Haven, CT

Built 2018 ADT: 15,000

HOWARD AVENUE

Over: INTERSTATE-95

0.2 MI N OF ROUTE 10, New Haven, CT

Built 2010 ADT: 131,200

I-95 TR 812

Over: I95, I91,SR724EB,TR801

EXIT 47 OFF I-95 NB, New Haven, CT

Built 2011 ADT: 85,400

INTERSTATE 95

Over: I91NB,US1,SR724 & RAMPS

OVER WATER STREET, New Haven, CT

Built 2013 ADT: 4,200

SR 724 Westbound

Over: INTERSTATE 91 & US 1

0.2 MI N OF ROUTE 34, New Haven, CT

Built 2016 ADT: 9,800

INTERSTATE 95 NORT

Over: US1,QUINNIPIAC RV,P&W RR

OVER QUINNIPIAC RIVER, New Haven, CT

Built 2014 ADT: 12,400

INTERSTATE 95 SOUT

Over: US1,QUINNIPIAC RV,P&W RR

OVER QUINNIPIAC RIVER, New Haven, CT

Built 2015 ADT: 9,400

SR 724 Eastbound

Over: US1, Local Rds, P&W RR

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

Built 2011 ADT: 4,600

I-95 RAMP 164

Over: INTERSTATE-95

0.2 MI S OF ROUTE 337, New Haven, CT

Built 2006 ADT: 89,600

ROUTE 337

Over: INTERSTATE-95

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

Built 2006 ADT: 89,600

US ROUTE 1 NB

Over: INTERSTATE-95

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

Built 2006 ADT: 89,600

INTERSTATE-95

Over: US RT. 1 SB AND AMTRAK

0.3 MI S OF ROUTE 100, New Haven, CT

Built 1958 ADT: 28,620

INTERSTATE-95

Over: ROUTE 100

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

Built 1958 ADT: 15,000

PRIVATE ROAD

Over: INTERSTATE-95

0.4 MI N OF ROUTE 100, New Haven, CT

Built 2004 ADT: 84,500

HOSLEY AVENUE

Over: INTERSTATE-95

0.5 MI N OF US ROUTE 1, New Haven, CT

Built 1958 ADT: 84,500

INTERSTATE-95

Over: SR 794 WESTBOUND

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

Built 1958 ADT: 4,800

CHERRY HILL ROAD

Over: INTERSTATE-95

0.5 MI N OF US ROUTE 1, New Haven, CT

Built 1958 ADT: 74,800

TODDS HILL ROAD

Over: INTERSTATE-95 & RAMP 171

0.3 MI N OF US ROUTE 1, New Haven, CT

Built 2002 ADT: 6,100

INTERSTATE-95

Over: SR 740 (CEDAR STREET)

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

Built 1958 ADT: 13,800

FEATHERBED LANE

Over: INTERSTATE-95

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

Built 1958 ADT: 65,200

LEETES ISLAND ROAD

Over: INTERSTATE-95

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

Built 2003 ADT: 53,600

INTERSTATE-95

Over: US ROUTE 1

I-95 EXIT NO. 57, New Haven, CT

Built 1958 ADT: 14,200

INTERSTATE-95

Over: ROUTE 77

0.5 MI N OF US ROUTE 1, New Haven, CT

Built 1958 ADT: 13,500

INTERSTATE-95

Over: SR 718

1.3 MI N OF ROUTE 77, New Haven, CT

Built 1958 ADT: 10,900

TANNER MARSH ROAD

Over: INTERSTATE-95

400 FT N. OF US ROUTE 1, New Haven, CT

Built 1958 ADT: 54,500

WILDWOOD AVE. #1

Over: INTERSTATE-95

1.9 MI S OF ROUTE 79, New Haven, CT

Built 1957 ADT: 54,500

MUNGERTOWN ROAD

Over: INTERSTATE-95

0.5 MI N OF US ROUTE 1, New Haven, CT

Built 1957 ADT: 54,500

ROUTE 79

Over: INTERSTATE-95

I-95 EXIT NO. 61, New Haven, CT

Built 1957 ADT: 53,600

HORSEPOND ROAD

Over: INTERSTATE-95

0.9 MI N OF ROUTE 79, New Haven, CT

Built 1957 ADT: 53,200

NEW ROAD

Over: INTERSTATE-95

1.4 MI N OF ROUTE 79, New Haven, CT

Built 1957 ADT: 53,200

SSR 450

Over: INTERSTATE-95

1.2 MI N OF US ROUTE 1, New Haven, CT

Built 1957 ADT: 50,400

CANTERBURY TURNPKE

Over: INTERSTATE-395

.2 MI SOUTH OF ROUTE 97, New Haven, CT

Built 1958 ADT: 42,400

SR 796

Over: US ROUTE 1

0.4 MI S OF I95, New Haven, CT

Built 1941 ADT: 17,300

AMTRAK NE CORRIDOR

Over: US ROUTE 1

200 FT N OF ROUTE 142, New Haven, CT

Built 1928 ADT: 25,300

PRIVATE RAILROAD

Over: US ROUTE 1

0.3 MI N OF ROUTE 139, New Haven, CT

Built 1913 ADT: 7,500

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

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026