IRR BIA RTE 55 over Box Elder Creek
Good Condition23 years old10 vehicles/day
Location
| State | Montana |
| County | Hill |
| Location | 3.6 Km NW Of Rocky Boys |
| Carries | IRR BIA RTE 55 |
| Crosses | Box Elder Creek |
| Coordinates | 48.28067, -109.81667 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.6 ft (7.5 m) |
| Max Span | 11.8 ft (3.6 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 91.5 sq m |
| Main Spans | 2 |
| Year Built | 2003 |
Traffic
| Avg Daily Traffic | 10 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00000000000C919 |