IRR - L44235 over Armells Creek
FairRosebud County, Montana · 22M NW Colstrip · Structure no. P00039043+08381
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 93 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - L44235 over Armells Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR - L44235 over Armells Creek in Rosebud County, Montana. It was built in 1967, so it is 58 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 93 ft (28.2 m) long and 33 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR - L44235 over Armells Creek built?
It was built in 1967, making it 58 years old in 2025.
What condition is IRR - L44235 over Armells Creek 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 February 2025.
How much traffic does IRR - L44235 over Armells Creek carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is IRR - L44235 over Armells Creek?
The structure is 93 ft (28.2 m) long with a longest span of 46 ft (14 m) and a deck 33 ft wide.
Who owns IRR - L44235 over Armells Creek?
It is owned by the State Highway Agency.