Frontage Road 614 over Int Sep I 15
GoodCascade County, Montana · 4M SW Cascade · Structure no. L07614000+01601
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 260 ft
- 4 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
Frontage Road 614 over Int Sep I 15 is a prestressed concrete stringer/multi-beam or girder carrying Frontage Road 614 over Int Sep I 15 in Cascade County, Montana. It was built in 1978, so it is 47 years old, younger 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 260 ft (79.4 m) long and 34 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 | 8 Very Good | No problems noted. |
| 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 Frontage Road 614 over Int Sep I 15 built?
It was built in 1978, making it 47 years old in 2025.
What condition is Frontage Road 614 over Int Sep I 15 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 December 2024.
How much traffic does Frontage Road 614 over Int Sep I 15 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Frontage Road 614 over Int Sep I 15?
The structure is 260 ft (79.4 m) long with a longest span of 87 ft (26.4 m) and a deck 34 ft wide.
Who owns Frontage Road 614 over Int Sep I 15?
It is owned by the State Highway Agency.