Sd079 over Big Nasty Ck
Fair Condition64 years old364 vehicles/day
Location
| State | South Dakota |
| County | Harding |
| Location | 13.7 N Jct Sd 20 |
| Carries | Sd079 |
| Crosses | Big Nasty Ck |
| Coordinates | 45.74064, -102.98733 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 233.9 ft (71.3 m) |
| Max Span | 89.2 ft (27.2 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 698.7 sq m |
| Main Spans | 3 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 364 (2024) |
| Truck Traffic | 24% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000032518145 |