I 15 over Beaverhead River
Fair Condition45 years old2,185 vehicles/day
Location
| State | Montana |
| County | Beaverhead |
| Location | Clark Canyon Dam |
| Carries | I 15 |
| Crosses | Beaverhead River |
| Coordinates | 45.00555, -112.84949 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 172.9 ft (52.7 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 674.6 sq m |
| Main Spans | 3 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 2,185 (2023) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015044+09302 |