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Dennison Rd over South Branch Macon Drain

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

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

Dennison Rd over South Branch Macon Drain in Monroe County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1983, making it 42 years old at the 2025 inventory.
It carries about 366 vehicles a day (traffic count year 2006).
Its listed owner is the county highway agency.
It is one of 40 of the 299 inventoried bridges in Monroe County rated poor (13.4%); 40 (13.4%) 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	Prestressed concrete multiple box beam
Length	about 76 ft
Location	1.1 Mile North of Brewer
NBI structure number	000000000007330
Condition class	Poor

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