I 15 over Int Red Rock-red Rock RD
Fair Condition55 years old2,116 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | 7.4m S Clark Canyon Dam |
| Carries | I 15 |
| Crosses | Int Red Rock-red Rock RD |
| Coordinates | 44.90017, -112.82082 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 123.0 ft (37.5 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 44.3 ft (13.5 m) |
| Deck Area | 506.2 sq m |
| Main Spans | 3 |
| Year Built | 1971 |
Traffic
| Avg Daily Traffic | 2,116 (2023) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
| Lanes Under 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 | I00015037+03521 |