354 Avenue over Ponca Ck
Poor Condition74 years old189 vehicles/day
Location
| State | South Dakota |
| County | Gregory |
| Location | 0.2w & 3.6s St. Charles |
| Carries | 354 Avenue |
| Crosses | Ponca Ck |
| Coordinates | 43.02936, -99.09988 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 3 (Serious) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 166.3 ft (50.7 m) |
| Max Span | 64.0 ft (19.5 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 405.6 sq m |
| Main Spans | 3 |
| Year Built | 1952 |
Traffic
| Avg Daily Traffic | 189 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000027220326 |