471st Street over North Deer Ck
Poor Condition101 years old462 vehicles/day
Location
| State | South Dakota |
| County | Brookings |
| Location | 10.4n Brookings |
| Carries | 471st Street |
| Crosses | North Deer Ck |
| Coordinates | 44.46229, -96.78720 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 74.1 ft (22.6 m) |
| Max Span | 36.1 ft (11 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 228.3 sq m |
| Main Spans | 2 |
| Year Built | 1925 (reconstructed 1940) |
Traffic
| Avg Daily Traffic | 462 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000006170056 |