Structure 5084150 · Bon Homme County, SD
Carries 40940 306th Street over Trib. To Emanuel Creek, 6.6w & 2s Of Tyndall.
Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.
How ratings work23 ft end to end, longest span 10 ft. 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 slab bridge.
| State | South Dakota |
| County | Bon Homme |
| Location | 6.6w & 2s Of Tyndall |
| Carries | 40940 306th Street |
| Crosses | Trib. To Emanuel Creek |
| Coordinates | 42.95212, -98.00271 |
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 23.3 ft (7.1 m) |
| Max Span | 10.5 ft (3.2 m) |
| Deck Width | 27.6 ft (8.4 m) |
| Deck Area | 59.6 sq m |
| Main Spans | 2 |
| Year Built | 1930 (reconstructed 1994) |
| Avg Daily Traffic | 60 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | May 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Unknown |
| Structure Number | 000000005084150 |
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.