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Stoney Corner Road over North Branch Clam River

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

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

Stoney Corner Road over North Branch Clam River in Missaukee County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1974, making it 51 years old at the 2025 inventory.
It carries about 600 vehicles a day (traffic count year 2007).
Its listed owner is the county highway agency.
It is one of 15 of the 39 inventoried bridges in Missaukee County rated fair (38.5%); 4 (10.3%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	6	Satisfactory condition

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

Bridge	Built	Vehicles/day	Condition
M-55\|w Watergate R over Clam River	1973	5,113	Fair
M-55\|e Houghton La over W Br Muskegon River	1931	4,338	Fair
M-55\|e Houghton La over Muskegon River	1935	4,338	Fair
M-66\|w Stoney Corn over N Br Clam River	1933	4,081	Fair
M-66 over Clam River	1929	2,696	Fair
M-66\|s Burkett Rd over Middle Br Clam River	1929	2,466	Fair