I 90 EB over Sep Red Hill Road
FairMineral County, Montana · 0.6M E St. Regis · Structure no. I00090034+02081
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 78 ft
- 3 main spans
- Daily traffic
- 3,559
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 EB over Sep Red Hill Road is a concrete continuous slab carrying I 90 EB over Sep Red Hill Road in Mineral 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 3,559 vehicles a day, roughly 28% of them trucks, projected to reach 3,736 by 2043. The structure is 78 ft (23.8 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
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 EB over Sep Red Hill Road built?
It was built in 1978, making it 47 years old in 2025.
What condition is I 90 EB over Sep Red Hill Road in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.
How much traffic does I 90 EB over Sep Red Hill Road carry?
About 3,559 vehicles per day (2023 count), of which roughly 28% are trucks.
How long is I 90 EB over Sep Red Hill Road?
The structure is 78 ft (23.8 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.
Who owns I 90 EB over Sep Red Hill Road?
It is owned by the State Highway Agency.