Us016a over Iron Ck
Good Condition34 years old625 vehicles/day
Location
| State | South Dakota |
| County | Custer |
| Location | 3.8 S Pennington Co Line |
| Carries | Us016a |
| Crosses | Iron Ck |
| Coordinates | 43.84663, -103.40229 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 10.2 ft (3.1 m) |
| Deck Area | 39.0 sq m |
| Main Spans | 2 |
| Year Built | 1992 |
Traffic
| Avg Daily Traffic | 625 (2024) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000017328015 |