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Ann Arbor Road over Bear Swamp Creek

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

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

Ann Arbor Road over Bear Swamp Creek in Monroe 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 1947 and reconstructed in 2003, making it 78 years old at the 2025 inventory.
It carries about 2,766 vehicles a day (traffic count year 2017).
Its listed owner is the county highway agency.
It is one of 166 of the 299 inventoried bridges in Monroe County rated fair (55.5%); 40 (13.4%) 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 35 ft
Location	3.95 Mi N of M 50
NBI structure number	000000000007257
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-75 over Conrail Raisin R Front	1955	67,800	Poor
I-75 over NS & Cn Railroad	1956	65,200	Good
I-75 over Norfolk Southern RR	1955	65,200	Fair
I-75 over Sandy Creek Rd	1955	65,200	Fair
I-75 over Paper Co Water Mains	1955	63,962	Fair
I-75 over Norfolk Southern RR	1955	63,962	Fair