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Old State Road over Northwest Drain Outlet 1

Tuscola County, Michigan · rated Good in the 2025 National Bridge Inventory

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

Old State Road over Northwest Drain Outlet 1 in Tuscola County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2010, making it 15 years old at the 2025 inventory.
It carries about 170 vehicles a day (traffic count year 2010).
Its listed owner is the county highway agency.
It is one of 82 of the 241 inventoried bridges in Tuscola County rated good (34.0%); 10 (4.1%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 59 ft
Location	Sec 32 Wisner Twp
NBI structure number	000000000010669
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
M-15 over Cass River	2015	14,550	Good
M-46 over Cheboygan & Branches Drn	1939	6,701	Poor
M-81 over Marsh Drain	2007	6,273	Good
M-25 over Quanicassee River	2013	5,571	Good
M-25 over (no Name) Drain	1932	5,571	Fair
M-25 over Wisner Drain	1985	5,571	Fair