I 90 over Int N Deer Lodge
FairPowell County, Montana · 1.2M N Deer Lodge · Structure no. I00090184+09061
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 124 ft
- 3 main spans
- Daily traffic
- 4,371
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int N Deer Lodge is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int N Deer Lodge in Powell County, Montana. It was built in 1961, so it is 64 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 4,371 vehicles a day, roughly 24% of them trucks, projected to reach 4,720 by 2043. The structure is 124 ft (37.9 m) long and 47 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 N Deer Lodge built?
It was built in 1961, making it 64 years old in 2025.
What condition is I 90 over Int N Deer Lodge 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 December 2023.
How much traffic does I 90 over Int N Deer Lodge carry?
About 4,371 vehicles per day (2023 count), of which roughly 24% are trucks.
How long is I 90 over Int N Deer Lodge?
The structure is 124 ft (37.9 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.
Who owns I 90 over Int N Deer Lodge?
It is owned by the State Highway Agency.