Sd1806 over Whetstone Ck
Good Condition49 years old157 vehicles/day
Location
| State | South Dakota |
| County | Gregory |
| Location | 8.0 N Jct US 18 |
| Carries | Sd1806 |
| Crosses | Whetstone Ck |
| Coordinates | 43.18392, -98.94594 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 305.1 ft (93 m) |
| Max Span | 79.7 ft (24.3 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 985.8 sq m |
| Main Spans | 4 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 157 (2024) |
| Truck Traffic | 30% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000027299221 |