IRR Sd063 over Cheyenne Rv
Fair Condition45 years old405 vehicles/day
Location
| State | South Dakota |
| County | Ziebach |
| Location | Ziebach-haakon Co Line |
| Carries | IRR Sd063 |
| Crosses | Cheyenne Rv |
| Coordinates | 44.69938, -101.21896 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 2108.9 ft (642.8 m) |
| Max Span | 182.1 ft (55.5 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 6813.7 sq m |
| Main Spans | 12 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 405 (2024) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000069390535 |