I 90 over Int Beavertail
FairMissoula County, Montana · 7.4M W Bearmouth · Structure no. I00090130+04301
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 125 ft
- 3 main spans
- Daily traffic
- 5,901
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int Beavertail is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int Beavertail in Missoula County, Montana. It was built in 1972, so it is 53 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 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 5,901 vehicles a day, roughly 20% of them trucks, projected to reach 6,314 by 2043. The structure is 125 ft (38.1 m) long and 43 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Int Beavertail built?
It was built in 1972, making it 53 years old in 2025.
What condition is I 90 over Int Beavertail 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 April 2024.
How much traffic does I 90 over Int Beavertail carry?
About 5,901 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is I 90 over Int Beavertail?
The structure is 125 ft (38.1 m) long with a longest span of 46 ft (14 m) and a deck 43 ft wide.
Who owns I 90 over Int Beavertail?
It is owned by the State Highway Agency.