478th AVE HWY 121 over Slip-up Ck
Good Condition12 years old1,340 vehicles/day
Location
| State | South Dakota |
| County | Minnehaha |
| Location | 4e & 3.5s Baltic |
| Carries | 478th AVE HWY 121 |
| Crosses | Slip-up Ck |
| Coordinates | 43.71091, -96.65116 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 77.4 ft (23.6 m) |
| Max Span | 28.9 ft (8.8 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 250.2 sq m |
| Main Spans | 3 |
| Year Built | 2014 |
Traffic
| Avg Daily Traffic | 1,340 (2023) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000050240095 |