455th Avenue over Big Sioux River
Fair Condition87 years old2,500 vehicles/day
Location
| State | South Dakota |
| County | Roberts |
| Location | 1.7s Of Jct With US 12 |
| Carries | 455th Avenue |
| Crosses | Big Sioux River |
| Coordinates | 45.30015, -97.10310 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 4 (Poor) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 36.1 ft (11 m) |
| Max Span | 17.1 ft (5.2 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 111.1 sq m |
| Main Spans | 2 |
| Year Built | 1939 |
Traffic
| Avg Daily Traffic | 2,500 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000055060438 |