County Highway #23 over Oak Ck
Fair Condition69 years old63 vehicles/day
Location
| State | South Dakota |
| County | Mellette |
| Location | 3s Mosher |
| Carries | County Highway #23 |
| Crosses | Oak Ck |
| Coordinates | 43.43663, -100.29384 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 128.6 ft (39.2 m) |
| Max Span | 27.6 ft (8.4 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 337.1 sq m |
| Main Spans | 5 |
| Year Built | 1957 |
Traffic
| Avg Daily Traffic | 63 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000048480298 |