161st Avenue over Trib To Boxelder Ck
Good Condition53 years old372 vehicles/day
Location
| State | South Dakota |
| County | Pennington |
| Location | 0.8 Mi.s. Newunderwd |
| Carries | 161st Avenue |
| Crosses | Trib To Boxelder Ck |
| Coordinates | 44.08461, -102.83421 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 50.9 ft (15.5 m) |
| Max Span | 50.9 ft (15.5 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 142.6 sq m |
| Main Spans | 1 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 372 (2022) |
| Truck Traffic | 19% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000052608298 |