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Forward Road over Clam River

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

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

Forward Road over Clam River in Missaukee County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1958, making it 67 years old at the 2025 inventory.
It carries about 1,316 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 4 of the 39 inventoried bridges in Missaukee County rated poor (10.3%); 4 (10.3%) 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


Structure	Prestressed concrete multiple box beam
Length	about 71 ft
Location	Section 1 T21N R7W
NBI structure number	000000000007038
Condition class	Poor

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