477th Avenue over Nine Mile Creek
Fair Condition49 years old75 vehicles/day
Location
| State | South Dakota |
| County | Lincoln |
| Location | 1e & 1.5s Of Harrisburg |
| Carries | 477th Avenue |
| Crosses | Nine Mile Creek |
| Coordinates | 43.40898, -96.66846 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 45.9 ft (14 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 102.2 sq m |
| Main Spans | 1 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 75 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000042130065 |