US 12 over Drainage
Good Condition20 years old441 vehicles/day
Location
| State | Montana |
| County | Musselshell |
| Location | 12m W Roundup |
| Carries | US 12 |
| Crosses | Drainage |
| Coordinates | 46.33516, -108.70687 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 26.6 ft (8.1 m) |
| Max Span | 10.8 ft (3.3 m) |
| Deck Area | 59.1 sq m |
| Main Spans | 2 |
| Year Built | 2006 |
Traffic
| Avg Daily Traffic | 441 (2023) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00014157+07001 |