IRR Us083 over Antelope Ck
Fair Condition45 years old2,544 vehicles/day
Location
| State | South Dakota |
| County | Todd |
| Location | 0.1 S Jct US 18 |
| Carries | IRR Us083 |
| Crosses | Antelope Ck |
| Coordinates | 43.30250, -100.65250 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 111.9 ft (34.1 m) |
| Max Span | 39.7 ft (12.1 m) |
| Deck Width | 65.6 ft (20 m) |
| Deck Area | 682 sq m |
| Main Spans | 3 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 2,544 (2024) |
| Truck Traffic | 11% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000061300061 |