Bridge conditions in Osceola County, Michigan
103 inventoried bridges · 7 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Osceola County tracks close to typical: 7 of its 103 inventoried bridges (6.8%) are rated poor, against a national rate of about 7%.
- 7 of the 103 bridges in Osceola County, Michigan, are rated in poor condition (6.8%) in the 2025 National Bridge Inventory, as of .
- 36 bridges (35.0%) are rated good and 60 (58.3%) fair.
- The median Osceola County bridge was built in 1985.
- The busiest poor-rated bridge is M-115 over West Branch River (built 1937), carrying about 4,184 vehicles a day.
Good 35.0% · Fair 58.3% · Poor 6.8% of 103 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-115 over West Branch River | 1937 | 4,184 | Poor |
| Old M-61 over Middle Branch River | 1939 | 3,600 | Poor |
| M-66 over Middle Branch River | 1939 | 3,158 | Poor |
| M-66 over Doc & Tom Creek | 1924 | 1,990 | Poor |
| M-66 over Muskegon River | 1940 | 1,990 | Poor |
| 70TH Avenue over Franz Creek | 1965 | 367 | Poor |
| 17 Mile Road over Middle Branch River | 1965 | 153 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-131 NB over E Br Hersey River | 1957 | 12,782 | Fair |
| US-131 NB over Hersey Creek | 1985 | 11,841 | Fair |
| US-131 SB over Hersey Creek | 1985 | 11,841 | Fair |
| US-10 over Twin Creek | 1997 | 11,184 | Good |
| US-10 over Hersey River | 1958 | 6,569 | Fair |
| US-131 NB over Johnson Creek | 1984 | 6,391 | Fair |
| US-131 SB over Johnson Creek | 1984 | 6,391 | Fair |
| US-131 NB over US-10 | 1984 | 6,391 | Fair |
| US-131 SB over US-10 | 1984 | 6,391 | Good |
| US-131 SB over E Br Hersey Creek | 1985 | 6,391 | Good |
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.