I 90 over Sep Sager Lane
GoodPowell County, Montana · 5M S Deer Lodge · Structure no. I00090191+08642
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 79 ft
- 3 main spans
- Daily traffic
- 5,354
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Sep Sager Lane is a concrete continuous slab carrying I 90 over Sep Sager Lane in Powell County, Montana. It was built in 1975, so it is 50 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 5,354 vehicles a day, roughly 17% of them trucks, projected to reach 5,809 by 2043. The structure is 79 ft (24.1 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 90 over Sep Sager Lane built?
It was built in 1975, making it 50 years old in 2025.
What condition is I 90 over Sep Sager Lane 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 May 2024.
How much traffic does I 90 over Sep Sager Lane carry?
About 5,354 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is I 90 over Sep Sager Lane?
The structure is 79 ft (24.1 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.
Who owns I 90 over Sep Sager Lane?
It is owned by the State Highway Agency.