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Naugatuck Avenue over Metro North Railroad

New Haven County, Connecticut · rated Poor in the 2025 National Bridge Inventory

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

Naugatuck Avenue over Metro North Railroad in New Haven County, Connecticut, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1929 and reconstructed in 1992, making it 96 years old at the 2025 inventory.
It carries about 3,790 vehicles a day (traffic count year 2023).
It is one of 33 of the 893 inventoried bridges in New Haven County rated poor (3.7%); 33 (3.7%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Source: FHWA National Bridge Inventory, 2025 data as reported by the Connecticut department of transportation.

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