39120 305th Street over Mosquito Creek
Poor Condition106 years old48 vehicles/day
Location
| State | South Dakota |
| County | Charles Mix |
| Location | 8.0s & 3.8w Of Wagner |
| Carries | 39120 305th Street |
| Crosses | Mosquito Creek |
| Coordinates | 42.96581, -98.36280 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 46.3 ft (14.1 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 16.1 ft (4.9 m) |
| Deck Area | 69.1 sq m |
| Main Spans | 1 |
| Year Built | 1920 (reconstructed 1983) |
Traffic
| Avg Daily Traffic | 48 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000012472370 |