Wyo 120 over Grass Creek
FairHot Springs County, Wyoming · Thermopolis-Meeteetse RD · Structure no. FLA
- Built
- 1989
- 36 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 153 ft
- 3 main spans
- Daily traffic
- 1,294
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Wyo 120 over Grass Creek is a prestressed concrete stringer/multi-beam or girder carrying Wyo 120 over Grass Creek in Hot Springs County, Wyoming. It was built in 1989, so it is 36 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 5 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 1,294 vehicles a day, roughly 18% of them trucks, projected to reach 1,812 by 2043. The structure is 153 ft (46.6 m) long and 43 ft wide. If it were closed, the detour would be 21.1 mi (34 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wyo 120 over Grass Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is Wyo 120 over Grass Creek 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 120 over Grass Creek carry?
About 1,294 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is Wyo 120 over Grass Creek?
The structure is 153 ft (46.6 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.
Who owns Wyo 120 over Grass Creek?
It is owned by the State Highway Agency.