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Coates Hwy FH38 over Big Manistee River

Manistee County, Michigan · rated Good in the 2025 National Bridge Inventory

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

Coates Hwy FH38 over Big Manistee River in Manistee County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2018, making it 7 years old at the 2025 inventory.
It carries about 854 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 12 of the 35 inventoried bridges in Manistee County rated good (34.3%); 5 (14.3%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 211 ft
Location	8.5 Miles E of Brethern
NBI structure number	000000000006452
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US-31 over Manistee River	1933	17,789	Fair
M-115 over Betsie River	1940	4,219	Fair
M-55 over Pine Creek	1932	4,202	Fair
M-55 over Manistee River	2021	3,408	Good
M-55 over Pine River	1934	3,175	Fair
East Lake Road over Little Manistee River	1964	3,000	Fair