US 287 over Teton River
FairTeton County, Montana · 1M S Choteau · Structure no. P00009063+05051
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 184 ft
- 4 main spans
- Daily traffic
- 532
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 over Teton River is a prestressed concrete stringer/multi-beam or girder carrying US 287 over Teton River in Teton County, Montana. It was built in 1978, so it is 47 years old, younger than the Montana average of 47 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 532 vehicles a day, roughly 7% of them trucks, projected to reach 559 by 2043. The structure is 184 ft (56.1 m) long and 42 ft wide. If it were closed, the detour would be 57.2 mi (92 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 | 8 Very Good | No problems noted. |
| 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 US 287 over Teton River built?
It was built in 1978, making it 47 years old in 2025.
What condition is US 287 over Teton 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 January 2024.
How much traffic does US 287 over Teton River carry?
About 532 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is US 287 over Teton River?
The structure is 184 ft (56.1 m) long with a longest span of 46 ft (14.1 m) and a deck 42 ft wide.
Who owns US 287 over Teton River?
It is owned by the State Highway Agency.