Structure 7070479 · Brown County, SD
Carries 383rd Avenue over Creek, 0.7w & 0.1n Of Mansfield.
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 | Brown |
| Location | 0.7w & 0.1n Of Mansfield |
| Carries | 383rd Avenue |
| Crosses | Creek |
| Coordinates | 45.24483, -98.57816 |
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 19.4 ft (5.9 m) |
| Deck Area | 39.5 sq m |
| Main Spans | 1 |
| Year Built | 1930 |
| Avg Daily Traffic | 98 (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 | 000000007070479 |
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.