NB Ia 12 over US 20 & US 75
Fair Condition48 years old6,100 vehicles/day
Location
| State | Iowa |
| County | Woodbury |
| Location | At Jct. US 20/us 75 |
| Carries | NB Ia 12 |
| Crosses | US 20 & US 75 |
| Coordinates | 42.47549, -96.32322 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 289.0 ft (88.1 m) |
| Max Span | 91.9 ft (28 m) |
| Deck Width | 57.4 ft (17.5 m) |
| Deck Area | 1541.8 sq m |
| Main Spans | 4 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 6,100 (2022) |
| Truck Traffic | 9% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 6 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000603830 |