475th Avenue over Big Sioux River
Fair Condition60 years old67 vehicles/day
Location
| State | South Dakota |
| County | Moody |
| Location | 1.1n & 12w Of Ward |
| Carries | 475th Avenue |
| Crosses | Big Sioux River |
| Coordinates | 44.16722, -96.70953 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 211.9 ft (64.6 m) |
| Max Span | 80.1 ft (24.4 m) |
| Deck Width | 32.5 ft (9.9 m) |
| Deck Area | 639.5 sq m |
| Main Spans | 3 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 67 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000051090019 |