I 15 Frontage RD over Beaverhead R-int Ramp
Fair Condition38 years old100 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | 8m N Clark Canyon Dam |
| Carries | I 15 Frontage RD |
| Crosses | Beaverhead R-int Ramp |
| Coordinates | 45.09790, -112.77736 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 104.0 ft (31.7 m) |
| Max Span | 50.9 ft (15.5 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 291.6 sq m |
| Main Spans | 2 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| 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 | I00015052+06323 |