4th Avenue SW over Big Sioux River
Fair Condition49 years old1,831 vehicles/day
Location
| State | South Dakota |
| County | Codington |
| Location | 0.3e Of 10th Street SW |
| Carries | 4th Avenue SW |
| Crosses | Big Sioux River |
| Coordinates | 44.89740, -97.12582 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 144.0 ft (43.9 m) |
| Max Span | 32.2 ft (9.8 m) |
| Deck Width | 48.9 ft (14.9 m) |
| Deck Area | 654.1 sq m |
| Main Spans | 5 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 1,831 (2022) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000015181175 |