IRR Sd127 over Big Slough Ck
Poor Condition71 years old354 vehicles/day
Location
| State | South Dakota |
| County | Roberts |
| Location | 4.7 S North Dakota Line |
| Carries | IRR Sd127 |
| Crosses | Big Slough Ck |
| Coordinates | 45.87035, -96.62579 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 118.4 ft (36.1 m) |
| Max Span | 37.7 ft (11.5 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 353.8 sq m |
| Main Spans | 3 |
| Year Built | 1955 |
Traffic
| Avg Daily Traffic | 354 (2024) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000055290047 |