Bridge conditions in Roscommon County, Michigan
42 inventoried bridges · 0 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
None of the 42 inventoried bridges in Roscommon County are rated in poor condition in the current federal inventory. 8 are rated good and 34 fair.
- 0 of the 42 bridges in Roscommon County, Michigan, are rated in poor condition (0.0%) in the 2025 National Bridge Inventory, as of .
- 8 bridges (19.0%) are rated good and 34 (81.0%) fair.
- The median Roscommon County bridge was built in 1971.
Good 19.0% · Fair 81.0% · Poor 0.0% of 42 bridges
Bridges rated poor
No bridges in this county carry a poor rating in the current inventory.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-18|m-55|w Hought over Denton Creek | 1959 | 11,420 | Fair |
| County Rd 100|SUNS over I-75 SB | 1971 | 9,280 | Fair |
| County Rd 100|SUNS over I-75 NB | 1971 | 9,280 | Fair |
| M-55 EB Ramp over I-75 NB | 1971 | 7,828 | Fair |
| M-55 WB over I-75 NB | 1971 | 7,828 | Fair |
| I-75 Sb|m-55 EB over Old 76|S Saint Helen Rd | 1971 | 7,800 | Fair |
| I-75 Nb|m-55 WB over Old 76|S Saint Helen Rd | 1971 | 7,368 | Fair |
| M-55 over US-127 | 1961 | 6,032 | Fair |
| M-18|lake St over S Br Au Sable River | 1935 | 5,505 | Fair |
| US-127 SB over Muskegon River | 1961 | 5,350 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Michigan: Michigan bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.