164th Street over Box Elder Ck
Good Condition7 years old48 vehicles/day
Location
| State | South Dakota |
| County | Pennington |
| Location | 1s 3.5e Newunderwood |
| Carries | 164th Street |
| Crosses | Box Elder Ck |
| Coordinates | 44.07438, -102.75895 |
Condition Ratings
| Overall Condition | Good |
| Deck | 9 (Excellent) |
| Superstructure | 9 (Excellent) |
| Substructure | 9 (Excellent) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 59.7 ft (18.2 m) |
| Max Span | 59.7 ft (18.2 m) |
| Deck Width | 16.1 ft (4.9 m) |
| Deck Area | 89.2 sq m |
| Main Spans | 1 |
| Year Built | 2019 |
Traffic
| Avg Daily Traffic | 48 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 1 |
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 | 000000052645305 |