FM 520th ST over Iowa River
Poor Condition55 years old2,060 vehicles/day
Location
| State | Iowa |
| County | Johnson |
| Location | 078062301 |
| Carries | FM 520th ST |
| Crosses | Iowa River |
| Coordinates | 41.55481, -91.51921 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 348.1 ft (106.1 m) |
| Max Span | 98.1 ft (29.9 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 986.7 sq m |
| Main Spans | 4 |
| Year Built | 1971 |
Traffic
| Avg Daily Traffic | 2,060 (2021) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000203355 |