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US-131 NB over 120TH Ave

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

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

US-131 NB over 120TH Ave in Allegan County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1959 and reconstructed in 2012, making it 66 years old at the 2025 inventory.
It carries about 15,300 vehicles a day (traffic count year 2009).
Its listed owner is the state highway agency.
It is one of 144 of the 245 inventoried bridges in Allegan County rated fair (58.8%); 41 (16.7%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 112 ft
Location	8.0 Mi N of Plainwell
NBI structure number	000000000000158
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US-131 NB over Kalamazoo River	1996	27,941	Fair
US-131 SB over Kalamazoo River	1996	27,941	Fair
US-131 NB over Grand Elk RR	1960	27,941	Fair
US-131 SB over Grand Elk RR	1960	27,941	Poor
I-196 E & US-31 N over Kalamazoo River	1964	24,400	Fair
M-89 (allegan St) over Kalamazoo Riv Mill Race	2012	21,300	Fair