I 90 WB over Int Turah
FairMissoula County, Montana · Turah · Structure no. I00090113+08862
- Built
- 1964
- 61 years old, rebuilt 1998
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 5,626
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 WB over Int Turah is a prestressed concrete stringer/multi-beam or girder carrying I 90 WB over Int Turah in Missoula County, Montana. It was built in 1964 and reconstructed in 1998, so it is 61 years old, older 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 5,626 vehicles a day, roughly 20% of them trucks, projected to reach 5,907 by 2043. The structure is 120 ft (36.6 m) long and 40 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 WB over Int Turah built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1998.
What condition is I 90 WB over Int Turah 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 November 2023.
How much traffic does I 90 WB over Int Turah carry?
About 5,626 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is I 90 WB over Int Turah?
The structure is 120 ft (36.6 m) long with a longest span of 45 ft (13.7 m) and a deck 40 ft wide.
Who owns I 90 WB over Int Turah?
It is owned by the State Highway Agency.