IRR Us012 over I029
Fair Condition48 years old1,830 vehicles/day
Location
| State | South Dakota |
| County | Roberts |
| Location | US 12 & I 29 Interchange |
| Carries | IRR Us012 |
| Crosses | I029 |
| Coordinates | 45.31447, -97.05101 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 361.9 ft (110.3 m) |
| Max Span | 107.0 ft (32.6 m) |
| Deck Width | 46.6 ft (14.2 m) |
| Deck Area | 1566.3 sq m |
| Main Spans | 4 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 1,830 (2024) |
| Truck Traffic | 32% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000055085429 |