County Highway #23 over White Horse Ck
Fair Condition69 years old55 vehicles/day
Location
| State | South Dakota |
| County | Mellette |
| Location | 4s Mosher |
| Carries | County Highway #23 |
| Crosses | White Horse Ck |
| Coordinates | 43.41384, -100.29378 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 117.1 ft (35.7 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 307.0 sq m |
| Main Spans | 5 |
| Year Built | 1957 |
Traffic
| Avg Daily Traffic | 55 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000048480313 |