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Bridge conditions in New Haven County, Connecticut

893 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

New Haven County tracks close to typical: 33 of its 893 inventoried bridges (3.7%) are rated poor, against a national rate of about 7%.

33 of the 893 bridges in New Haven County, Connecticut, are rated in poor condition (3.7%) in the 2025 National Bridge Inventory, as of August 20, 2026.
275 bridges (30.8%) are rated good and 585 (65.5%) fair.
The median New Haven County bridge was built in 1965.
The busiest poor-rated bridge is Interstate-95 over Metro North Railroad (built 1956), carrying about 121,500 vehicles a day.

Good 30.8% · Fair 65.5% · Poor 3.7% of 893 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Interstate-95 over Metro North Railroad	1956	121,500	Poor
Interstate-84 EB over I-84WB RTE8 Naugatuck Rv	1967	63,000	Poor
Interstate-84 EB over Shadduck Road	1964	35,800	Poor
Route 15 NB over Quinnipiac River	1946	33,700	Poor
Interstate 84 WB over Rte 8 Naug Riv M-n RR	1967	33,600	Poor
Route 8 Northbound over Route 8 SB & Local Roads	1966	30,400	Poor
Interstate-691 EB over Interstate-91	1965	22,500	Poor
Route 40 SB over Amtrak Railroad	1971	22,200	Poor
Route 8 Southbound over Riverside St-sunnyside	1966	16,900	Poor
SR 745 Kimberly Av over West River	1969	16,000	Poor
I-84 Tr 809 over Route 8 NB Riverside St	1966	14,600	Poor
Quinnipiac Street over Wallace Raceway	1915	12,500	Poor
Toelles Road over Quinnipiac River	1982	8,703	Poor
SR 738 (E. Center over Interstate-91	1965	8,000	Poor
Center Street over Harbor Brook	1871	6,186	Poor
SR 736 - Buckingha over Gulf Pond	1951	5,900	Poor
Route 146 over West River	1910	5,500	Poor
Oregon Road over Quinnipiac River	1963	4,900	Poor
I-84 Tr 808 over Route 8 SB & Ramp 129	1966	4,200	Poor
Quarry Road over Interstate-95	1958	4,100	Poor
Humphrey Street over Mill River	1908	4,100	Poor
Naugatuck Avenue over Metro North Railroad	1929	3,790	Poor
Eagle Street over Naugatuck River	1956	3,067	Poor
Clapboard Hill Rd over East River	1950	3,000	Poor
Connelly Parkway over Mill River	1940	2,900	Poor
I-84 Ramp 197 over Ramp 202 Meadow Street	1967	2,800	Poor
Horton Hill Rd. over Marks Brook	1940	2,700	Poor
Route 337 over Morris Creek	1936	2,600	Poor
Waite Street over Lake Whitney	1935	2,000	Poor
Copse Road over Amtrak Railroad	1910	1,200	Poor
New Rock Hill Road over Interstate-91	1965	950	Poor
Willow Street over Willow Brook	1924	625	Poor
Fort Path Road over Amtrak Railroad	1910	545	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Interstate 95 over Canal Dock Road	2015	187,800	Good
Interstate-95 over West River & SR 745	2018	142,200	Good
Route 71 over Sodom Brook	2019	141,900	Good
Interstate-91 over I-91 Ramp 002	1965	141,200	Fair
Interstate-91&rt15 over Willow Brook	1964	136,800	Fair
Interstate-91 over Grand Avenue	1965	135,400	Fair
Interstate-95 over SR 745 (first Avenue)	1956	133,800	Fair
Interstate-91 over I-91 Ramps & Amtrak	1965	130,500	Fair
Interstate-95 over Wepawaug River	1958	130,100	Fair
Interstate-91 over Clinton Avenue	1965	129,400	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Connecticut: Connecticut bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.