I 15 over Sep 9th RD NE
GoodTeton County, Montana · 3M N Power · Structure no. I00015304+06771
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 80 ft
- 3 main spans
- Daily traffic
- 1,969
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Sep 9th RD NE is a concrete continuous slab carrying I 15 over Sep 9th RD NE in Teton County, Montana. It was built in 1972, so it is 53 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 1,969 vehicles a day, roughly 21% of them trucks, projected to reach 2,067 by 2043. The structure is 80 ft (24.4 m) long and 44 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 | 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 Sep 9th RD NE built?
It was built in 1972, making it 53 years old in 2025.
What condition is I 15 over Sep 9th RD NE 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 Sep 9th RD NE carry?
About 1,969 vehicles per day (2023 count), of which roughly 21% are trucks.
How long is I 15 over Sep 9th RD NE?
The structure is 80 ft (24.4 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.
Who owns I 15 over Sep 9th RD NE?
It is owned by the State Highway Agency.