Forest Road 30400 over Gros Ventre River
FairTeton County, Wyoming · 20 Mi. Ne. of Jackson Wy · Structure no. 040304000001050
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected September 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 227 ft
- 3 main spans
- Daily traffic
- 450
- 2018 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Forest Road 30400 over Gros Ventre River is a prestressed concrete box beam or girders - multiple carrying Forest Road 30400 over Gros Ventre River in Teton County, Wyoming. It was built in 1969, so it is 56 years old, older 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 450 vehicles a day, roughly 10% of them trucks, projected to reach 675 by 2045. The structure is 227 ft (69.2 m) long and 30 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| 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 Forest Road 30400 over Gros Ventre River built?
It was built in 1969, making it 56 years old in 2025.
What condition is Forest Road 30400 over Gros Ventre 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 September 2024.
How much traffic does Forest Road 30400 over Gros Ventre River carry?
About 450 vehicles per day (2018 count), of which roughly 10% are trucks.
How long is Forest Road 30400 over Gros Ventre River?
The structure is 227 ft (69.2 m) long with a longest span of 87 ft (26.5 m) and a deck 30 ft wide.
Who owns Forest Road 30400 over Gros Ventre River?
It is owned by the U.S. Forest Service.