List of Interstate Highways in Iowa
| Interstate Highways of the Iowa Primary Highway System | |
|---|---|
| Highway markers for I-80, I-380, and I-35 Bus. Loop | |
| Interstate Highways in Iowa highlighted in red | |
| System information | |
| Formed | August 14, 1957 | 
| Highway names | |
| Interstates | Interstate X (I-X) | 
| Business Loops: | Interstate X Business (I-X Bus.) | 
| System links | |
Interstate Highways in Iowa form a network of freeways that cross the U.S. state of Iowa as part of the Interstate Highway System.