Sd020 over Thunder Butte Ck
Good Condition18 years old380 vehicles/day
Location
| State | South Dakota |
| County | Perkins |
| Location | 4.1e Prairie City |
| Carries | Sd020 |
| Crosses | Thunder Butte Ck |
| Coordinates | 45.53109, -102.72084 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 9 (Excellent) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 28.5 ft (8.7 m) |
| Max Span | 13.8 ft (4.2 m) |
| Deck Area | 100.9 sq m |
| Main Spans | 2 |
| Year Built | 2008 |
Traffic
| Avg Daily Traffic | 380 (2024) |
| Truck Traffic | 17% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2022 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000053112290 |