I 90 over Int E Missoula
FairMissoula County, Montana · East Missoula · Structure no. I00090107+02701
- Built
- 1964
- 61 years old, rebuilt 1998
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 196 ft
- 3 main spans
- Daily traffic
- 10,294
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int E Missoula is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int E Missoula 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 10,294 vehicles a day, roughly 11% of them trucks, projected to reach 10,808 by 2042. The structure is 196 ft (59.6 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Int E Missoula built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1998.
What condition is I 90 over Int E Missoula 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 2025.
How much traffic does I 90 over Int E Missoula carry?
About 10,294 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is I 90 over Int E Missoula?
The structure is 196 ft (59.6 m) long with a longest span of 72 ft (21.9 m) and a deck 40 ft wide.
Who owns I 90 over Int E Missoula?
It is owned by the State Highway Agency.