Sd040 over Iron Ck
Fair Condition52 years old1,007 vehicles/day
Location
| State | South Dakota |
| County | Pennington |
| Location | 5.3 E Jct US 16a |
| Carries | Sd040 |
| Crosses | Iron Ck |
| Coordinates | 43.87342, -103.34441 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 152.2 ft (46.4 m) |
| Max Span | 58.1 ft (17.7 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 491.8 sq m |
| Main Spans | 3 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 1,007 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000052357446 |