I 90 over Local-Rr
FairMineral County, Montana · 6.2M W Alberton · Structure no. I00090069+00412
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 190 ft
- 4 main spans
- Daily traffic
- 4,585
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Local-Rr is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Local-Rr in Mineral County, Montana. It was built in 1964, so it is 61 years old, older 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 4,585 vehicles a day, roughly 20% of them trucks, projected to reach 4,814 by 2043. The structure is 190 ft (57.9 m) long and 47 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Local-Rr built?
It was built in 1964, making it 61 years old in 2025.
What condition is I 90 over Local-Rr 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 January 2025.
How much traffic does I 90 over Local-Rr carry?
About 4,585 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is I 90 over Local-Rr?
The structure is 190 ft (57.9 m) long with a longest span of 61 ft (18.7 m) and a deck 47 ft wide.
Who owns I 90 over Local-Rr?
It is owned by the State Highway Agency.