408th Avenue over North Br Twelve Mile Ck
Fair Condition106 years old433 vehicles/day
Location
| State | South Dakota |
| County | Davison |
| Location | 1 W & 8.8 S Mitchell |
| Carries | 408th Avenue |
| Crosses | North Br Twelve Mile Ck |
| Coordinates | 43.57339, -98.04599 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 30.5 ft (9.3 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 85.6 sq m |
| Main Spans | 1 |
| Year Built | 1920 (reconstructed 1983) |
Traffic
| Avg Daily Traffic | 433 (2022) |
| Truck Traffic | 2% |
| 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 | 000000018140188 |