Home › Michigan › Calhoun County › 20 Mile Road over St Joseph River

20 Mile Road over St Joseph River

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

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

20 Mile Road over St Joseph River in Calhoun 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 7 (good condition) on the 0-9 scale.
It was built in 1996, making it 29 years old at the 2025 inventory.
It carries about 97 vehicles a day (traffic count year 1996).
Its listed owner is the county highway agency.
It is one of 43 of the 213 inventoried bridges in Calhoun County rated good (20.2%); 37 (17.4%) 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 99 ft
Location	4 Mi W of Homer
NBI structure number	000000000001357
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-94 Bl & M-37 over I-94	2015	121,987	Fair
I-94 EB over Riverside Drive	2009	25,840	Fair
I-94 WB over Riverside Drive	2009	25,840	Fair
I-194 over Kalamazoo River	1966	24,600	Fair
I-194 over Gtw RR	1966	24,600	Fair
I-194 over Conrail (abn)	1966	24,600	Fair