Home › Michigan › Lenawee County › Seneca Hwy over Raisin River S Branch

Seneca Hwy over Raisin River S Branch

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

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

Seneca Hwy over Raisin River S Branch in Lenawee County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
It was built in 1978, making it 47 years old at the 2025 inventory.
It carries about 340 vehicles a day (traffic count year 2006).
Its listed owner is the county highway agency.
It is one of 26 of the 225 inventoried bridges in Lenawee County rated poor (11.6%); 26 (11.6%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	4	Poor condition

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