I 90 over Int Bear Canyon
FairGallatin County, Montana · 3.7M E Bozeman · Structure no. I00090313+04472
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 113 ft
- 3 main spans
- Daily traffic
- 9,819
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int Bear Canyon is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int Bear Canyon in Gallatin County, Montana. It was built in 1962, so it is 63 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 9,819 vehicles a day, roughly 13% of them trucks, projected to reach 10,702 by 2043. The structure is 113 ft (34.4 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Bear Canyon built?
It was built in 1962, making it 63 years old in 2025.
What condition is I 90 over Int Bear Canyon 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 June 2024.
How much traffic does I 90 over Int Bear Canyon carry?
About 9,819 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is I 90 over Int Bear Canyon?
The structure is 113 ft (34.4 m) long with a longest span of 41 ft (12.6 m) and a deck 41 ft wide.
Who owns I 90 over Int Bear Canyon?
It is owned by the State Highway Agency.