IRR BIA RTE 55 over Box Elder Creek
GoodHill County, Montana · 3.6 KM NW of Rocky Boys · Structure no. 00000000000C919
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected October 2024
- Type
- Culvert
- Concrete
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 10
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 55 over Box Elder Creek is a concrete culvert carrying IRR BIA RTE 55 over Box Elder Creek in Hill County, Montana. It was built in 2003, so it is 22 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 12 by 2044. The structure is 25 ft (7.5 m) long and 40 ft wide. If it were closed, the detour would be 12.4 mi (20 km).
Location
No coordinates are recorded for this structure.
Condition 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 55 over Box Elder Creek built?
It was built in 2003, making it 22 years old in 2025.
What condition is IRR BIA RTE 55 over Box Elder Creek 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 October 2024.
How much traffic does IRR BIA RTE 55 over Box Elder Creek carry?
About 10 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 55 over Box Elder Creek?
The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.6 m) and a deck 40 ft wide.
Who owns IRR BIA RTE 55 over Box Elder Creek?
It is owned by the Bureau of Indian Affairs.