IRR BIA RTE 1 over Big Horn Canal
GoodBig Horn County, Montana · 16 KM W of Crow Agency · Structure no. 00000000000C227
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected June 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 400
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 1 over Big Horn Canal is a concrete continuous culvert carrying IRR BIA RTE 1 over Big Horn Canal in Big Horn County, Montana. It was built in 2001, so it is 24 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 400 vehicles a day, roughly 25% of them trucks, projected to reach 468 by 2044. The structure is 30 ft (9.1 m) long and 36 ft wide. If it were closed, the detour would be 31.1 mi (50 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 1 over Big Horn Canal built?
It was built in 2001, making it 24 years old in 2025.
What condition is IRR BIA RTE 1 over Big Horn Canal in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.
How much traffic does IRR BIA RTE 1 over Big Horn Canal carry?
About 400 vehicles per day (2024 count), of which roughly 25% are trucks.
How long is IRR BIA RTE 1 over Big Horn Canal?
The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m) and a deck 36 ft wide.
Who owns IRR BIA RTE 1 over Big Horn Canal?
It is owned by the Bureau of Indian Affairs.