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Birnwick Rd over Wolf Creek

Lenawee County, Michigan · rated Fair in the 2025 National Bridge Inventory

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

Birnwick Rd over Wolf Creek in Lenawee County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1966, making it 59 years old at the 2025 inventory.
It carries about 120 vehicles a day (traffic count year 2001).
Its listed owner is the county highway agency.
It is one of 105 of the 225 inventoried bridges in Lenawee County rated fair (46.7%); 26 (11.6%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 40 ft
Location	0.2 Mi E of Tipton Hwy
NBI structure number	000000000005618
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
M-52 over Beaver Creek	1919	18,099	Fair
M-52 over S Br Raisin River	1948	17,411	Fair
US-223 over Norfolk Southern RR	1941	16,443	Poor
US-223 over Raisin River	1940	13,979	Fair
Bentoak Ave over S Branch Raisin River	1952	13,600	Fair
US-223 over Mdot RR Cor & M-34	2006	13,595	Fair