I 15 over Int Moose Creek
FairSilver Bow County, Montana · 3.1M S Divide · Structure no. I00015099+02332
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 76 ft
- 1 main span
- Daily traffic
- 2,354
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Int Moose Creek is a prestressed concrete stringer/multi-beam or girder carrying I 15 over Int Moose Creek in Silver Bow 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 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 2,354 vehicles a day, roughly 19% of them trucks, projected to reach 2,542 by 2043. The structure is 76 ft (23.2 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 15 over Int Moose Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is I 15 over Int Moose Creek 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 February 2025.
How much traffic does I 15 over Int Moose Creek carry?
About 2,354 vehicles per day (2023 count), of which roughly 19% are trucks.
How long is I 15 over Int Moose Creek?
The structure is 76 ft (23.2 m) long with a longest span of 75 ft (22.9 m) and a deck 44 ft wide.
Who owns I 15 over Int Moose Creek?
It is owned by the State Highway Agency.