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Peacock Road over Little Manistee River

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

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

Peacock Road over Little Manistee River in Lake County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1929 and reconstructed in 1989, making it 96 years old at the 2025 inventory.
It carries about 30 vehicles a day (traffic count year 2007).
Its listed owner is the county highway agency.
It is one of 5 of the 31 inventoried bridges in Lake County rated poor (16.1%); 5 (16.1%) 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	Steel stringer or multi-beam girder
Length	about 26 ft
Location	2 Mi E 5 Mi S of Irons
NBI structure number	000000000005293
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
M-37 over Pere Marquette River	1922	4,771	Fair
M-37 over Baldwin Creek	1929	4,771	Fair
US-10 over Baldwin Creek	1931	3,813	Fair
US-10 over Sanborn Creek	1934	3,813	Fair
M-37 over Little Manistee River	1939	2,500	Good
56 Th Street FH32 over Pere Marquette River	1997	1,400	Good