310th over Winnebago River
Fair Condition66 years old992 vehicles/day
Location
| State | Iowa |
| County | Cerro Gordo |
| Location | 097222001 |
| Carries | 310th |
| Crosses | Winnebago River |
| Coordinates | 43.21334, -93.47353 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 168.0 ft (51.2 m) |
| Max Span | 55.1 ft (16.8 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 404.5 sq m |
| Main Spans | 3 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 992 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000106950 |