Bridge conditions in Musselshell County, Montana
28 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Musselshell County tracks close to typical: 1 of its 28 inventoried bridges (3.6%) are rated poor, against a national rate of about 7%.
- 1 of the 28 bridges in Musselshell County, Montana, are rated in poor condition (3.6%) in the 2025 National Bridge Inventory, as of .
- 16 bridges (57.1%) are rated good and 11 (39.3%) fair.
- The median Musselshell County bridge was built in 1996.
- The busiest poor-rated bridge is Harvey Rd over Musselshell River 018 (built 1916), carrying about 100 vehicles a day.
Good 57.1% · Fair 39.3% · Poor 3.6% of 28 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 |
|---|---|---|---|
| Harvey Rd over Musselshell River 018 | 1916 | 100 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 87 over Musselshell River | 1996 | 2,799 | Good |
| US 87 over Park Coulee | 1995 | 2,548 | Good |
| US 87 over Razor Creek | 1995 | 2,548 | Good |
| US 87 over South Willow Creek | 1976 | 1,223 | Good |
| US 12 over Willow Creek | 1999 | 712 | Fair |
| US 12 over Drainage | 2003 | 480 | Good |
| US 12 over Dean Creek | 1935 | 441 | Fair |
| US 12 over Drainage | 2006 | 441 | Good |
| US 12 over Currant Creek | 1936 | 441 | Fair |
| US 12 over Horsethief Creek | 2015 | 440 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Montana: Montana 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.