West 12th Street over Big Sioux River
Good Condition29 years old40,100 vehicles/day
Location
| State | South Dakota |
| County | Minnehaha |
| Location | 0.2e Of Lyons Avenue - Sf |
| Carries | West 12th Street |
| Crosses | Big Sioux River |
| Coordinates | 43.54385, -96.77081 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 263.1 ft (80.2 m) |
| Max Span | 90.9 ft (27.7 m) |
| Deck Width | 113.2 ft (34.5 m) |
| Deck Area | 2766.9 sq m |
| Main Spans | 3 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 40,100 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 6 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000050180210 |