I 15 over Int Emerson Jct-Rr
GoodCascade County, Montana · 1M N Great Falls · Structure no. I00015282+05471
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 379 ft
- 6 main spans
- Daily traffic
- 3,561
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Int Emerson Jct-Rr is a prestressed concrete stringer/multi-beam or girder carrying I 15 over Int Emerson Jct-Rr in Cascade County, Montana. It was built in 1967, so it is 58 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 3,561 vehicles a day, roughly 14% of them trucks, projected to reach 3,738 by 2043. The structure is 379 ft (115.4 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 15 over Int Emerson Jct-Rr built?
It was built in 1967, making it 58 years old in 2025.
What condition is I 15 over Int Emerson Jct-Rr 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 January 2025.
How much traffic does I 15 over Int Emerson Jct-Rr carry?
About 3,561 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is I 15 over Int Emerson Jct-Rr?
The structure is 379 ft (115.4 m) long with a longest span of 82 ft (25 m) and a deck 32 ft wide.
Who owns I 15 over Int Emerson Jct-Rr?
It is owned by the State Highway Agency.