I 90 over Int Laurel-P 4-RR
FairYellowstone County, Montana · Laurel · Structure no. I00090434+00902
- Built
- 1964
- 61 years old, rebuilt 2007
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 366 ft
- 2 main spans
- Daily traffic
- 7,545
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int Laurel-P 4-RR is a steel stringer/multi-beam or girder carrying I 90 over Int Laurel-P 4-RR in Yellowstone County, Montana. It was built in 1964 and reconstructed in 2007, 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 7,545 vehicles a day, roughly 18% of them trucks, projected to reach 7,922 by 2043. The structure is 366 ft (111.5 m) long and 44 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 | 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 Laurel-P 4-RR built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2007.
What condition is I 90 over Int Laurel-P 4-RR 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 2023.
How much traffic does I 90 over Int Laurel-P 4-RR carry?
About 7,545 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is I 90 over Int Laurel-P 4-RR?
The structure is 366 ft (111.5 m) long with a longest span of 112 ft (34.1 m) and a deck 44 ft wide.
Who owns I 90 over Int Laurel-P 4-RR?
It is owned by the State Highway Agency.