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Usfs Rte 2231 over Sturgeon River

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

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

Usfs Rte 2231 over Sturgeon River in Delta 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 1948 and reconstructed in 1992, making it 77 years old at the 2025 inventory.
It carries about 10 vehicles a day (traffic count year 1998).
It is one of 52 of the 86 inventoried bridges in Delta County rated fair (60.5%); 0 (0.0%) 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 65 ft
Location	Sec 17 Nahma Twp
NBI structure number	091001000001011
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\|us-41\|m-35 over Escanaba River	2016	21,906	Good
Us-2\|us-41 over Portage Creek	1928	14,094	Fair
US-2 US-41 over Ford River	1941	13,600	Fair
Us-2\|us-41 over Willow Creek	1979	12,255	Fair
US-2 over Tacoosh River	1990	8,505	Fair
US-2 over Rapid River	1931	8,505	Fair