I 15 over Int Trask-Lowland RD
GoodJefferson County, Montana · 8M N Butte · Structure no. I00015138+06602
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 128 ft
- 3 main spans
- Daily traffic
- 1,576
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Int Trask-Lowland RD is a prestressed concrete stringer/multi-beam or girder carrying I 15 over Int Trask-Lowland RD in Jefferson County, Montana. It was built in 1976, so it is 49 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,576 vehicles a day, roughly 16% of them trucks, projected to reach 1,701 by 2043. The structure is 128 ft (39 m) long and 45 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 15 over Int Trask-Lowland RD built?
It was built in 1976, making it 49 years old in 2025.
What condition is I 15 over Int Trask-Lowland RD in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.
How much traffic does I 15 over Int Trask-Lowland RD carry?
About 1,576 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is I 15 over Int Trask-Lowland RD?
The structure is 128 ft (39 m) long with a longest span of 65 ft (19.8 m) and a deck 45 ft wide.
Who owns I 15 over Int Trask-Lowland RD?
It is owned by the State Highway Agency.