M-46 over Cheboygan & Branches Drn
Tuscola County, Michigan · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- M-46 over Cheboygan & Branches Drn in Tuscola County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1939, making it 86 years old at the 2025 inventory.
- It carries about 6,701 vehicles a day (traffic count year 2007).
- Its listed owner is the state highway agency.
- It is one of 10 of the 241 inventoried bridges in Tuscola County rated poor (4.1%); 10 (4.1%) 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.
View this bridge on a map → (43.40724, -83.67901)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 4 | Poor condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 22 ft |
| Location | 0.3 Mi West of Richville |
| NBI structure number | 000000000010416 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Tuscola County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-15 over Cass River | 2015 | 14,550 | Good |
| M-81 over Marsh Drain | 2007 | 6,273 | Good |
| M-25 over Quanicassee River | 2013 | 5,571 | Good |
| M-25 over (no Name) Drain | 1932 | 5,571 | Fair |
| M-25 over Wisner Drain | 1985 | 5,571 | Fair |
| M-25 over Allen Drain | 1985 | 5,571 | Fair |
All bridges nearby: Tuscola County, MI bridge conditions · every bridge in Tuscola County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.