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Fw Road over Black River

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

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

Fw Road over Black River in Marquette 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 5 (fair condition) on the 0-9 scale.
It was built in 1934, making it 91 years old at the 2025 inventory.
It carries about 10 vehicles a day (traffic count year 1994).
Its listed owner is the county highway agency.
It is one of 59 of the 147 inventoried bridges in Marquette County rated fair (40.1%); 19 (12.9%) 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 37 ft
Location	0.2 Mi S of 478 Hwy
NBI structure number	000000000006585
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Us-41\|m-28 over Carp River	1936	23,600	Fair
US-41 over Carp Creek	1979	14,675	Good
US-41 over Ls&i RR	1979	13,542	Fair
M-28 over Chocolay River	2005	9,335	Good
US-41 NB over Carp River	1955	8,662	Fair
US-41 SB over Carp River	1958	8,662	Fair