I 90 over Deer Creek Road
FairMissoula County, Montana · 1.9M W Bonner · Structure no. I00090109+02241
- Built
- 1964
- 61 years old, rebuilt 1998
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 143 ft
- 3 main spans
- Daily traffic
- 10,294
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Deer Creek Road is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Deer Creek Road 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 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 10,294 vehicles a day, roughly 11% of them trucks, projected to reach 10,808 by 2042. The structure is 143 ft (43.6 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Deer Creek Road built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1998.
What condition is I 90 over Deer Creek Road 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 Deer Creek Road carry?
About 10,294 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is I 90 over Deer Creek Road?
The structure is 143 ft (43.6 m) long with a longest span of 52 ft (15.7 m) and a deck 41 ft wide.
Who owns I 90 over Deer Creek Road?
It is owned by the State Highway Agency.