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Mosinee Grade Road over Black River

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

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

Mosinee Grade Road over Black River in Gogebic 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1958 and reconstructed in 2003, making it 67 years old at the 2025 inventory.
It carries about 10 vehicles a day (traffic count year 1998).
Its listed owner is the county highway agency.
It is one of 56 of the 102 inventoried bridges in Gogebic County rated fair (54.9%); 22 (21.6%) 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	Steel stringer or multi-beam girder
Length	about 49 ft
Location	Sec 28 Erwin Twp
NBI structure number	000000000003005
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US-2 over Powder Mill Creek	1962	8,481	Poor
US-2 Br over Montreal River	1964	7,161	Fair
US-2 over Diversion Ditch	1946	5,387	Fair
US-2 over Sunday Lake Outlet	1947	5,387	Fair
US-2 over Black River	1947	5,286	Fair
US-2 over Little Black River	1947	5,281	Fair