Sd251 over Ponca Ck
Good Condition42 years old400 vehicles/day
Location
| State | South Dakota |
| County | Gregory |
| Location | 2.6 S Jst US 18 |
| Carries | Sd251 |
| Crosses | Ponca Ck |
| Coordinates | 43.18872, -99.43516 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 60.4 ft (18.4 m) |
| Max Span | 20.3 ft (6.2 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 195.0 sq m |
| Main Spans | 3 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 400 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000027050216 |