IRR Us018 over Black Tail Ck
Fair Condition73 years old1,294 vehicles/day
Location
| State | South Dakota |
| County | County 102 |
| Location | 1.8 E Fall River Co Line |
| Carries | IRR Us018 |
| Crosses | Black Tail Ck |
| Coordinates | 43.18835, -102.96424 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 132.5 ft (40.4 m) |
| Max Span | 42.7 ft (13 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 395.9 sq m |
| Main Spans | 3 |
| Year Built | 1953 |
Traffic
| Avg Daily Traffic | 1,294 (2024) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000057026360 |