US 89 over Flat Creek
FairTeton County, Wyoming · Jackson - Moran Jct. · Structure no. FFG
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 90 ft
- 3 main spans
- Daily traffic
- 9,732
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 89 over Flat Creek is a steel continuous stringer/multi-beam or girder carrying US 89 over Flat Creek in Teton County, Wyoming. It was built in 1987, so it is 38 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 9,732 vehicles a day, roughly 3% of them trucks, projected to reach 13,625 by 2043. The structure is 90 ft (27.4 m) long and 73 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 89 over Flat Creek built?
It was built in 1987, making it 38 years old in 2025.
What condition is US 89 over Flat 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 August 2023.
How much traffic does US 89 over Flat Creek carry?
About 9,732 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is US 89 over Flat Creek?
The structure is 90 ft (27.4 m) long with a longest span of 35 ft (10.7 m) and a deck 73 ft wide.
Who owns US 89 over Flat Creek?
It is owned by the State Highway Agency.