Armington RD over Big Otter Creek 029
FairCascade County, Montana · 3M SE Belt · Structure no. L07228004+05001
- Built
- 1954
- 71 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 77 ft
- 3 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Armington RD over Big Otter Creek 029 is a wood or timber stringer/multi-beam or girder carrying Armington RD over Big Otter Creek 029 in Cascade County, Montana. It was built in 1954, so it is 71 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 77 ft (23.5 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 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 Armington RD over Big Otter Creek 029 built?
It was built in 1954, making it 71 years old in 2025.
What condition is Armington RD over Big Otter Creek 029 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 Armington RD over Big Otter Creek 029 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Armington RD over Big Otter Creek 029?
The structure is 77 ft (23.5 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.
Who owns Armington RD over Big Otter Creek 029?
It is owned by the County Highway Agency.