Mt Highland DR over Int Cont DR I 90 011
FairSilver Bow County, Montana · Butte-Mt Highland DR · Structure no. L47588000+02001
- Built
- 1969
- 56 years old, rebuilt 2009
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 295 ft
- 4 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
Mt Highland DR over Int Cont DR I 90 011 is a prestressed concrete stringer/multi-beam or girder carrying Mt Highland DR over Int Cont DR I 90 011 in Silver Bow County, Montana. It was built in 1969 and reconstructed in 2009, so it is 56 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 295 ft (89.9 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mt Highland DR over Int Cont DR I 90 011 built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2009.
What condition is Mt Highland DR over Int Cont DR I 90 011 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 September 2023.
How much traffic does Mt Highland DR over Int Cont DR I 90 011 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Mt Highland DR over Int Cont DR I 90 011?
The structure is 295 ft (89.9 m) long with a longest span of 96 ft (29.3 m) and a deck 43 ft wide.
Who owns Mt Highland DR over Int Cont DR I 90 011?
It is owned by the State Highway Agency.