421 AVE over Redstone Ck
Poor Condition96 years old50 vehicles/day
Location
| State | South Dakota |
| County | Miner |
| Location | 7.5n Fedora |
| Carries | 421 AVE |
| Crosses | Redstone Ck |
| Coordinates | 44.11860, -97.79067 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 4 (Poor) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 41.0 ft (12.5 m) |
| Max Span | 39.0 ft (11.9 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 132.5 sq m |
| Main Spans | 1 |
| Year Built | 1930 (reconstructed 1968) |
Traffic
| Avg Daily Traffic | 50 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000049030055 |