Grand Loop Road over Gibbon River
FairTeton County, Wyoming · 0.5 Mi. South of Madison · Structure no. 1570009P0000000
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected September 2024
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 111 ft
- 3 main spans
- Daily traffic
- 5,800
- 2023 count
- Owner
- Federal
- National Park Service
About this bridge
Grand Loop Road over Gibbon River is a concrete continuous box beam or girders - single or spread carrying Grand Loop Road over Gibbon River in Teton County, Wyoming. It was built in 1960, so it is 65 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 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 5,800 vehicles a day, roughly 1% of them trucks, projected to reach 6,380 by 2043. The structure is 111 ft (33.8 m) long and 42 ft wide. If it were closed, the detour would be 75.2 mi (121 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| 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 Grand Loop Road over Gibbon River built?
It was built in 1960, making it 65 years old in 2025.
What condition is Grand Loop Road over Gibbon 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 Grand Loop Road over Gibbon River carry?
About 5,800 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Grand Loop Road over Gibbon River?
The structure is 111 ft (33.8 m) long with a longest span of 71 ft (21.6 m) and a deck 42 ft wide.
Who owns Grand Loop Road over Gibbon River?
It is owned by the National Park Service.