Lone Star Geyser R over Firehole River
FairTeton County, Wyoming · 14.9 Mi. NW of West Thumb · Structure no. 1570066S0000000
- Built
- 1915
- 110 years old, rebuilt 1982
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 250
- 2019 count
- Owner
- Federal
- National Park Service
About this bridge
Lone Star Geyser R over Firehole River is a prestressed concrete tee beam carrying Lone Star Geyser R over Firehole River in Teton County, Wyoming. It was built in 1915 and reconstructed in 1982, so it is 110 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 250 vehicles a day, roughly 2% of them trucks, projected to reach 500 by 2039. The structure is 53 ft (16.1 m) long and 10 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Lone Star Geyser R over Firehole River built?
It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1982.
What condition is Lone Star Geyser R over Firehole 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 Lone Star Geyser R over Firehole River carry?
About 250 vehicles per day (2019 count), of which roughly 2% are trucks.
How long is Lone Star Geyser R over Firehole River?
The structure is 53 ft (16.1 m) long with a longest span of 53 ft (16.1 m) and a deck 10 ft wide.
Who owns Lone Star Geyser R over Firehole River?
It is owned by the National Park Service.