Us085 over Big Nasty Ck
Fair Condition66 years old1,075 vehicles/day
Location
| State | South Dakota |
| County | Harding |
| Location | 9.7 S North Dakota Line |
| Carries | Us085 |
| Crosses | Big Nasty Ck |
| Coordinates | 45.81058, -103.38254 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 117.1 ft (35.7 m) |
| Max Span | 23.3 ft (7.1 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 374.9 sq m |
| Main Spans | 5 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 1,075 (2024) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000032327097 |