Columbus-Molt RD over Sep Columbus-Molt RD I 9
FairStillwater County, Montana · 2M E Columbus · Structure no. L48096000+01001
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 312 ft
- 4 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
Columbus-Molt RD over Sep Columbus-Molt RD I 9 is a steel continuous stringer/multi-beam or girder carrying Columbus-Molt RD over Sep Columbus-Molt RD I 9 in Stillwater County, Montana. It was built in 1970, so it is 55 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 312 ft (95.1 m) long and 34 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Columbus-Molt RD over Sep Columbus-Molt RD I 9 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Columbus-Molt RD over Sep Columbus-Molt RD I 9 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 March 2024.
How much traffic does Columbus-Molt RD over Sep Columbus-Molt RD I 9 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Columbus-Molt RD over Sep Columbus-Molt RD I 9?
The structure is 312 ft (95.1 m) long with a longest span of 95 ft (29 m) and a deck 34 ft wide.
Who owns Columbus-Molt RD over Sep Columbus-Molt RD I 9?
It is owned by the State Highway Agency.