Sd377 over Johnson Ck
Fair Condition67 years old514 vehicles/day
Location
| State | South Dakota |
| County | Jackson |
| Location | 1.3 SW Jct Sd 240 |
| Carries | Sd377 |
| Crosses | Johnson Ck |
| Coordinates | 43.73601, -101.96844 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 52.8 ft (16.1 m) |
| Max Span | 17.1 ft (5.2 m) |
| Deck Area | 157.8 sq m |
| Main Spans | 3 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 514 (2024) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000036086179 |