US 93 over Big Lost River
Fair Condition39 years old1,500 vehicles/day
Location
| State | Idaho |
| County | Custer |
| Location | 10.3 S. Mackay |
| Carries | US 93 |
| Crosses | Big Lost River |
| Coordinates | 43.84628, -113.43772 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 65.0 ft (19.8 m) |
| Max Span | 63.0 ft (19.2 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 241.6 sq m |
| Main Spans | 1 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 1,500 (2023) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000017995 |