US 93 over Bitterroot River
FairRavalli County, Montana · 2M N Hamilton · Structure no. P00007049+05031
- Built
- 2005
- 20 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 552 ft
- 4 main spans
- Daily traffic
- 14,573
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 93 over Bitterroot River is a prestressed concrete stringer/multi-beam or girder carrying US 93 over Bitterroot River in Ravalli County, Montana. It was built in 2005, so it is 20 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 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 14,573 vehicles a day, roughly 1% of them trucks, projected to reach 15,812 by 2043. The structure is 552 ft (168.2 m) long and 83 ft wide. If it were closed, the detour would be 78.3 mi (126 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 | 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 US 93 over Bitterroot River built?
It was built in 2005, making it 20 years old in 2025.
What condition is US 93 over Bitterroot 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 October 2024.
How much traffic does US 93 over Bitterroot River carry?
About 14,573 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is US 93 over Bitterroot River?
The structure is 552 ft (168.2 m) long with a longest span of 138 ft (42 m) and a deck 83 ft wide.
Who owns US 93 over Bitterroot River?
It is owned by the State Highway Agency.