I 15 over Int Gates of the Mtns
GoodLewis and Clark County, Montana · 17M S Wolf Creek · Structure no. I00015209+01082
- Built
- 1962
- 63 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 2,403
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Int Gates of the Mtns is a prestressed concrete stringer/multi-beam or girder carrying I 15 over Int Gates of the Mtns in Lewis and Clark County, Montana. It was built in 1962, so it is 63 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 2,403 vehicles a day, roughly 23% of them trucks, projected to reach 2,607 by 2043. The structure is 120 ft (36.6 m) long and 41 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 Gates of the Mtns built?
It was built in 1962, making it 63 years old in 2025.
What condition is I 15 over Int Gates of the Mtns 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 July 2023.
How much traffic does I 15 over Int Gates of the Mtns carry?
About 2,403 vehicles per day (2023 count), of which roughly 23% are trucks.
How long is I 15 over Int Gates of the Mtns?
The structure is 120 ft (36.6 m) long with a longest span of 45 ft (13.7 m) and a deck 41 ft wide.
Who owns I 15 over Int Gates of the Mtns?
It is owned by the State Highway Agency.