I090 W over 321 AVE
Fair Condition55 years old3,852 vehicles/day
Location
| State | South Dakota |
| County | Lyman |
| Location | Lyman Interchange |
| Carries | I090 W |
| Crosses | 321 AVE |
| Coordinates | 43.87622, -99.74063 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 131.9 ft (40.2 m) |
| Max Span | 48.9 ft (14.9 m) |
| Deck Width | 40.7 ft (12.4 m) |
| Deck Area | 498.5 sq m |
| Main Spans | 3 |
| Year Built | 1971 |
Traffic
| Avg Daily Traffic | 3,852 (2024) |
| Truck Traffic | 29% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000043313220 |