IRR - US 87 over Box Elder Creek
Good Condition57 years old1,694 vehicles/day
Location
| State | Montana |
| County | Hill |
| Location | Box Elder |
| Carries | IRR - US 87 |
| Crosses | Box Elder Creek |
| Coordinates | 48.31030, -110.01999 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 71.5 ft (21.8 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 46.3 ft (14.1 m) |
| Deck Area | 307.4 sq m |
| Main Spans | 1 |
| Year Built | 1969 |
Traffic
| Avg Daily Traffic | 1,694 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00010089+07281 |