480th Avenue over Lake Alvin Outlet
Fair Condition36 years old805 vehicles/day
Location
| State | South Dakota |
| County | Lincoln |
| Location | 0.5n & 4.5e Of Harrisburg |
| Carries | 480th Avenue |
| Crosses | Lake Alvin Outlet |
| Coordinates | 43.44068, -96.60899 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 5 (Fair) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 8.9 ft (2.7 m) |
| Deck Area | 52.9 sq m |
| Main Spans | 2 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 805 (2022) |
| Truck Traffic | 6% |
| 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 | 000000042160044 |