US 18 over Little Sioux River
Good Condition16 years old4,170 vehicles/day
Location
| State | Iowa |
| County | Clay |
| Location | 3.1 Mi. E Of E Jct. US 71 |
| Carries | US 18 |
| Crosses | Little Sioux River |
| Coordinates | 43.12738, -95.08276 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 538.1 ft (164 m) |
| Max Span | 137.1 ft (41.8 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 2361.6 sq m |
| Main Spans | 4 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 4,170 (2022) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000020341 |