US 12 over Horsethief Creek
Good Condition11 years old440 vehicles/day
Location
| State | Montana |
| County | Musselshell |
| Location | 3m SW Roundup |
| Carries | US 12 |
| Crosses | Horsethief Creek |
| Coordinates | 46.41740, -108.59157 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 91.2 ft (27.8 m) |
| Max Span | 86.6 ft (26.4 m) |
| Deck Width | 35.4 ft (10.8 m) |
| Deck Area | 300.2 sq m |
| Main Spans | 1 |
| Year Built | 2015 |
Traffic
| Avg Daily Traffic | 440 (2023) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00014165+07861 |