478th Avenue over Ck
Poor Condition76 years old1,159 vehicles/day
Location
| State | South Dakota |
| County | Brookings |
| Location | 0.9n Bushnell |
| Carries | 478th Avenue |
| Crosses | Ck |
| Coordinates | 44.33898, -96.64670 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 3 (Serious) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 90.9 ft (27.7 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 24.3 ft (7.4 m) |
| Deck Area | 205.0 sq m |
| Main Spans | 2 |
| Year Built | 1950 |
Traffic
| Avg Daily Traffic | 1,159 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000006240141 |