Twin Butte Road over Trib. To Blk Horse Butte
Good Condition21 years old14 vehicles/day
Location
| State | South Dakota |
| County | Corson |
| Location | 1.0w & 28.5s Keldron |
| Carries | Twin Butte Road |
| Crosses | Trib. To Blk Horse Butte |
| Coordinates | 45.52338, -101.81852 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 5 (Fair) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 25.3 ft (7.7 m) |
| Max Span | 10.5 ft (3.2 m) |
| Deck Area | 47.0 sq m |
| Main Spans | 2 |
| Year Built | 2005 |
Traffic
| Avg Daily Traffic | 14 (2022) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
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 | 000000016091295 |