Bridge conditions in Wibaux County, Montana
25 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
1 of the 25 bridges the federal inventory lists in Wibaux County are rated poor; the rest split 3 good and 21 fair.
- 1 of the 25 bridges in Wibaux County, Montana, are rated in poor condition (4.0%) in the 2025 National Bridge Inventory, as of .
- 3 bridges (12.0%) are rated good and 21 (84.0%) fair.
- The median Wibaux County bridge was built in 1974.
- The busiest poor-rated bridge is Carlyle Rd E over Beaver Creek (built 1960), carrying about 38 vehicles a day.
Good 12.0% · Fair 84.0% · Poor 4.0% of 25 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 |
|---|---|---|---|
| Carlyle Rd E over Beaver Creek | 1960 | 38 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 94 over Yates Creek | 1962 | 3,592 | Fair |
| I 94 over Yates Creek | 2000 | 3,592 | Fair |
| I 94 over Beaver Creek | 1974 | 1,796 | Fair |
| I 94 over Int Carlyle Rd | 1974 | 1,796 | Fair |
| I 94 over Int Carlyle Rd | 1974 | 1,796 | Fair |
| S 7 over Beaver Creek | 1949 | 1,671 | Fair |
| I 94 over Beaver Creek | 1962 | 1,630 | Fair |
| S7-2ndAVE NE over Beaver Creek | 2023 | 1,066 | Good |
| S 7 over Beaver Creek | 2022 | 714 | Good |
| S 7 over Rattlesnake Creek | 1942 | 628 | Fair |
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.