Wyo 173 over Big Horn River
FairHot Springs County, Wyoming · 4 MI S. of Thermopolis · Structure no. JOE
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 292 ft
- 3 main spans
- Daily traffic
- 314
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Wyo 173 over Big Horn River is a steel continuous stringer/multi-beam or girder carrying Wyo 173 over Big Horn River in Hot Springs County, Wyoming. It was built in 1992, so it is 33 years old, younger than the Wyoming average of 48.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 314 vehicles a day, roughly 2% of them trucks, projected to reach 440 by 2043. The structure is 292 ft (89 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wyo 173 over Big Horn River built?
It was built in 1992, making it 33 years old in 2025.
What condition is Wyo 173 over Big Horn River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does Wyo 173 over Big Horn River carry?
About 314 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is Wyo 173 over Big Horn River?
The structure is 292 ft (89 m) long with a longest span of 114 ft (34.7 m) and a deck 35 ft wide.
Who owns Wyo 173 over Big Horn River?
It is owned by the State Highway Agency.