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Spring Street over Bird Creek

Huron County, Michigan · rated Poor in the 2025 National Bridge Inventory

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

Spring Street over Bird Creek in Huron County, Michigan, 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 1975, making it 50 years old at the 2025 inventory.
It carries about 1,200 vehicles a day (traffic count year 2008).
Its listed owner is a city or municipal highway agency.
It is one of 14 of the 192 inventoried bridges in Huron County rated poor (7.3%); 14 (7.3%) 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


Structure	Prestressed concrete multiple box beam
Length	about 42 ft
Location	Village of Port Austin
NBI structure number	000000000013341
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Anton Street over Sebewaing River	2013	5,590	Good
M-142 over Pinnebog River	1946	5,274	Good
M-142\|pigeon Rd over Nettle Run	2012	5,200	Good
M-25 over Sebewaing River	1949	5,123	Fair
Center Street over Sebewaing River	2003	4,900	Fair
M-25 over Pigeon River	1929	4,865	Good