SH 75 over Salmon River
Fair Condition72 years old1,100 vehicles/day
Location
| State | Idaho |
| County | Custer |
| Location | 7.9 S. Challis |
| Carries | SH 75 |
| Crosses | Salmon River |
| Coordinates | 44.40744, -114.25153 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 319.9 ft (97.5 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 31.8 ft (9.7 m) |
| Deck Area | 945.8 sq m |
| Main Spans | 5 |
| Year Built | 1954 |
Traffic
| Avg Daily Traffic | 1,100 (2023) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000017815 |