Bridge conditions in Powder River County, Montana
23 inventoried bridges · 0 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Powder River County is one of the counties with a clean sheet: 23 bridges on the federal inventory and not one rated poor. 11 carry a fair rating, which means wear worth watching but no structural deficiency.
- 0 of the 23 bridges in Powder River County, Montana, are rated in poor condition (0.0%) in the 2025 National Bridge Inventory, as of .
- 12 bridges (52.2%) are rated good and 11 (47.8%) fair.
- The median Powder River County bridge was built in 1996.
Good 52.2% · Fair 47.8% · Poor 0.0% of 23 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 |
|---|---|---|---|
| US 212 over Little Powder River | 1976 | 2,594 | Fair |
| US 212 over E Fk Little Powder River | 1983 | 2,594 | Fair |
| US 212 over E Fork Otter Creek | 1992 | 2,305 | Good |
| US 212 over Pumpkin Creek | 2012 | 2,197 | Good |
| US 212 over Powder River | 1985 | 2,084 | Good |
| S 59 over Mizpah Creek | 2001 | 742 | Good |
| S 59 over Road Creek-stockpass | 2001 | 742 | Good |
| S 544 over Little Powder River | 1974 | 139 | Fair |
| Big Powder R E Rd over Little Powder River 028 | 1947 | 107 | Fair |
| Moorhead Rd over Powder River 006 | 2022 | 100 | 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.