Home › Michigan › Calhoun County › Sentry Drive over Canadian National Rail

Sentry Drive over Canadian National Railro

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

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

Sentry Drive over Canadian National Railro in Calhoun 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 2002, making it 23 years old at the 2025 inventory.
It carries about 150 vehicles a day (traffic count year 2014).
It is one of 133 of the 213 inventoried bridges in Calhoun County rated fair (62.4%); 37 (17.4%) 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 multiple box beam
Length	about 195 ft
Location	0.3 Miles East of Gate at
NBI structure number	AFMIMBMV07001
Condition class	Fair

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