Wa Cnty Rd 81 over Middle Fork Powder River
Washakie County, Wyoming · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Wa Cnty Rd 81 over Middle Fork Powder River in Washakie County, Wyoming, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 98 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 32 of the 60 inventoried bridges in Washakie County rated fair (53.3%); 6 (10.0%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (43.57642, -107.14214)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Steel culvert |
| Length | about 36 ft |
| Location | 20 Mi S.E. Big Trails |
| NBI structure number | FNX |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wyoming department of transportation.
Busiest bridges in Washakie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 16 over Lower Hanover Canal | 1951 | 9,910 | Fair |
| US 20 over Big Horn River | 1975 | 4,411 | Fair |
| US 16 over Slick Creek | 2012 | 3,298 | Fair |
| Wyo 433 over Big Horn Canal | 2006 | 2,866 | Fair |
| US 20 over Big Horn Canal | 2006 | 2,768 | Good |
| US 20 over Fifteen Mile Creek | 2006 | 2,768 | Fair |
All bridges nearby: Washakie County, WY bridge conditions · every bridge in Washakie County · Wyoming bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.