Old US 91 over Prewett Creek 070
Fair Condition95 years old316 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | 10m S Cascade |
| Carries | Old US 91 |
| Crosses | Prewett Creek 070 |
| Coordinates | 47.17234, -111.82694 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 80.1 ft (24.4 m) |
| Max Span | 35.1 ft (10.7 m) |
| Deck Width | 25.3 ft (7.7 m) |
| Deck Area | 187.9 sq m |
| Main Spans | 3 |
| Year Built | 1931 |
Traffic
| Avg Daily Traffic | 316 (2023) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L07604007+03001 |