I 90 Westbound over Int Whitehall
FairJefferson County, Montana · Whitehall · Structure no. I00090249+00262
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 129 ft
- 3 main spans
- Daily traffic
- 5,175
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 Westbound over Int Whitehall is a prestressed concrete stringer/multi-beam or girder carrying I 90 Westbound over Int Whitehall in Jefferson County, Montana. It was built in 1966, so it is 59 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 5,175 vehicles a day, roughly 20% of them trucks, projected to reach 5,743 by 2043. The structure is 129 ft (39.3 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 Westbound over Int Whitehall built?
It was built in 1966, making it 59 years old in 2025.
What condition is I 90 Westbound over Int Whitehall 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 October 2023.
How much traffic does I 90 Westbound over Int Whitehall carry?
About 5,175 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is I 90 Westbound over Int Whitehall?
The structure is 129 ft (39.3 m) long with a longest span of 50 ft (15.2 m) and a deck 40 ft wide.
Who owns I 90 Westbound over Int Whitehall?
It is owned by the State Highway Agency.