FM 580th St. over Little Sioux River
Fair Condition45 years old350 vehicles/day
Location
| State | Iowa |
| County | Cherokee |
| Location | 091402801 |
| Carries | FM 580th St. |
| Crosses | Little Sioux River |
| Coordinates | 42.67716, -95.57054 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Girder and Floorbeam |
| Total Length | 415.0 ft (126.5 m) |
| Max Span | 115.2 ft (35.1 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 1239.7 sq m |
| Main Spans | 4 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 350 (2022) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000108171 |