Thunderhead Falls over Rapid Ck
Good Condition54 years old10 vehicles/day
Location
| State | South Dakota |
| County | Pennington |
| Location | Off Thunderhead Fall |
| Carries | Thunderhead Falls |
| Crosses | Rapid Ck |
| Coordinates | 44.05424, -103.41864 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 28.9 ft (8.8 m) |
| Deck Width | 15.4 ft (4.7 m) |
| Deck Area | 42.8 sq m |
| Main Spans | 1 |
| Year Built | 1972 |
Traffic
| Avg Daily Traffic | 10 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000052316320 |