Ia 3 over Big Sioux Overflow
Fair Condition64 years old1,570 vehicles/day
Location
| State | Iowa |
| County | Plymouth |
| Location | 1.0 Mi. W Of Jct. Ia 12 |
| Carries | Ia 3 |
| Crosses | Big Sioux Overflow |
| Coordinates | 42.76184, -96.62073 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 102.0 ft (31.1 m) |
| Max Span | 39.0 ft (11.9 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 342.1 sq m |
| Main Spans | 3 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 1,570 (2022) |
| Truck Traffic | 29% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000039670 |