US 12 over Powder River
Fair Condition53 years old552 vehicles/day
Location
| State | Montana |
| County | Custer |
| Location | 26m E Miles City |
| Carries | US 12 |
| Crosses | Powder River |
| Coordinates | 46.42839, -105.30839 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 622.0 ft (189.6 m) |
| Max Span | 126.6 ft (38.6 m) |
| Deck Width | 40.4 ft (12.3 m) |
| Deck Area | 2332.1 sq m |
| Main Spans | 5 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 552 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00002031+07241 |