IRR Sd1806 over La Roche Ck
Fair Condition19 years old279 vehicles/day
Location
| State | South Dakota |
| County | Stanley |
| Location | 24.7 SE Jct US 83 |
| Carries | IRR Sd1806 |
| Crosses | La Roche Ck |
| Coordinates | 44.23193, -99.93058 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 9 (Excellent) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 24.6 ft (7.5 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Area | 82.5 sq m |
| Main Spans | 2 |
| Year Built | 2007 |
Traffic
| Avg Daily Traffic | 279 (2024) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000059617374 |