477 Avenue over North Fork Whetstone Rv
Fair Condition90 years old52 vehicles/day
Location
| State | South Dakota |
| County | Grant |
| Location | 6n & 1w Milbank |
| Carries | 477 Avenue |
| Crosses | North Fork Whetstone Rv |
| Coordinates | 45.31185, -96.65763 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 62.0 ft (18.9 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 24.3 ft (7.4 m) |
| Deck Area | 139.9 sq m |
| Main Spans | 2 |
| Year Built | 1936 |
Traffic
| Avg Daily Traffic | 52 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000026280010 |