311 Avenue over Dog Ear Ck
Poor Condition63 years old31 vehicles/day
Location
| State | South Dakota |
| County | Tripp |
| Location | 7e & 5.8n Witten |
| Carries | 311 Avenue |
| Crosses | Dog Ear Ck |
| Coordinates | 43.52595, -99.94170 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 38.1 ft (11.6 m) |
| Max Span | 18.0 ft (5.5 m) |
| Deck Width | 20.0 ft (6.1 m) |
| Deck Area | 70.8 sq m |
| Main Spans | 2 |
| Year Built | 1963 |
Traffic
| Avg Daily Traffic | 31 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000062150172 |