National Street over Willow Ck
Fair Condition18 years old112 vehicles/day
Location
| State | South Dakota |
| County | Butte |
| Location | 0.2e Us85 - Belle Fourche |
| Carries | National Street |
| Crosses | Willow Ck |
| Coordinates | 44.66260, -103.84971 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 28.5 ft (8.7 m) |
| Max Span | 7.9 ft (2.4 m) |
| Deck Area | 115.7 sq m |
| Main Spans | 3 |
| Year Built | 2008 |
Traffic
| Avg Daily Traffic | 112 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000010099380 |