M-72 over S Br Au Sable River

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

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

• M-72 over S Br Au Sable River in Crawford 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 1958, making it 67 years old at the 2025 inventory.
• It carries about 2,140 vehicles a day (traffic count year 2015).
• Its listed owner is the state highway agency.
• It is one of 40 of the 55 inventoried bridges in Crawford County rated fair (72.7%); 6 (10.9%) 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.

View this bridge on a map → (44.61426, -84.45613)

Component ratings

Bridge details

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

Busiest bridges in Crawford County

All bridges nearby: Crawford County, MI bridge conditions · every bridge in Crawford County · Michigan bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.