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North Thayer Road over Cisco Br Ontonagon River

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

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

North Thayer Road over Cisco Br Ontonagon River in Gogebic County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1954, making it 71 years old at the 2025 inventory.
It carries about 46 vehicles a day (traffic count year 1998).
Its listed owner is the county highway agency.
It is one of 22 of the 102 inventoried bridges in Gogebic County rated poor (21.6%); 22 (21.6%) 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

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