397 AVE (fas 6219) over I090
Good Condition61 years old672 vehicles/day
Location
| State | South Dakota |
| County | Davison |
| Location | Mt Vernon Interchange |
| Carries | 397 AVE (fas 6219) |
| Crosses | I090 |
| Coordinates | 43.69576, -98.26565 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 252.0 ft (76.8 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 806.4 sq m |
| Main Spans | 4 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 672 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000018030105 |