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Riverside Drive over Big Munuscong R

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

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

Riverside Drive over Big Munuscong R in Chippewa County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1976, making it 49 years old at the 2025 inventory.
It carries about 110 vehicles a day (traffic count year 1986).
Its listed owner is the county highway agency.
It is one of 73 of the 112 inventoried bridges in Chippewa County rated fair (65.2%); 13 (11.6%) 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	Continuous prestressed concrete multiple box beam
Length	about 160 ft
Location	18 Mi S of Sault Ste Mari
NBI structure number	000000000001630
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-75 BS\|3 Mile Rd over I-75 NB	1962	15,700	Fair
I-75 Bs (ashmun) over Power Canal	1934	10,180	Fair
Easterday Ave. over Ashmun Creek	1994	8,347	Good
Easterday Ave over I-75 NB	1962	7,774	Fair
West Portage Ave. over Power Canal	1970	7,637	Fair
Spruce St. over Power Canal	1983	5,995	Fair