Bridge conditions in Washakie County, Wyoming
60 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 60 Washakie County bridges in the federal inventory, 6 carry a poor rating. That 10.0% share is roughly 1x the national average.
- 6 of the 60 bridges in Washakie County, Wyoming, are rated in poor condition (10.0%) in the 2025 National Bridge Inventory, as of .
- 22 bridges (36.7%) are rated good and 32 (53.3%) fair.
- The median Washakie County bridge was built in 1984.
- The busiest poor-rated bridge is Washakie Avenue over Lower Hanover Canal (built 1970), carrying about 1,495 vehicles a day.
Good 36.7% · Fair 53.3% · Poor 10.0% of 60 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 |
|---|---|---|---|
| Washakie Avenue over Lower Hanover Canal | 1970 | 1,495 | Poor |
| Culbertson Avenue over Big Horn River | 1934 | 1,045 | Poor |
| Wyo 435 over Tensleep Creek | 1929 | 164 | Poor |
| Wa Cnty Rd R34 over Spillway Hanover Canal | 1929 | 119 | Poor |
| Wa Cnty Rd 580A over Big Cottonwood Creek | 1937 | 16 | Poor |
| Wa Cnty Rd 580 over East Fork Sand Creek | 1935 | 4 | Poor |
Busiest bridges in the 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 |
| US 16 over Slick Creek | 1985 | 2,145 | Good |
| US 16 over Unnamed Draw | 1994 | 2,145 | Good |
| US 16 over Cottonwood Creek | 1964 | 1,965 | Good |
| US 16 over Nowood River | 2015 | 1,965 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Wyoming: Wyoming 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.