Structure 68186070 · Yankton County, SD
Carries 44660 298th Street over Trib. To Clay Creek, 5.4w & 1s Of Irene.
Set by its lowest-rated component: Deck and Substructure at 4 of 9.
How ratings work22 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | South Dakota |
| County | Yankton |
| Location | 5.4w & 1s Of Irene |
| Carries | 44660 298th Street |
| Crosses | Trib. To Clay Creek |
| Coordinates | 43.06827, -97.26420 |
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 21.7 ft (6.6 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 23.3 ft (7.1 m) |
| Deck Area | 46.9 sq m |
| Main Spans | 1 |
| Year Built | 1940 |
| Avg Daily Traffic | 25 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | July 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Unknown |
| Structure Number | 000000068186070 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.