408th Ave. over Redstone Ck
Fair Condition61 years old120 vehicles/day
Location
| State | South Dakota |
| County | Sanborn |
| Location | 3e 2.4n Forestburg |
| Carries | 408th Ave. |
| Crosses | Redstone Ck |
| Coordinates | 44.06006, -98.05140 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 51.8 ft (15.8 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 154.8 sq m |
| Main Spans | 2 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 120 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000056140096 |