IA
Interstates in Iowa
7 Interstate routes run through Iowa: 4 primary, 3 auxiliary.
Primary / North-south
I-29
Kansas City to the Canadian border
Active Primary / North-south I-35Laredo to Duluth
Active Primary / East-west I-74Midwest and Carolinas segments
Active Primary / East-west I-80San Francisco to Teaneck
Active Auxiliary / Auxiliary I-235Des Moines, Wichita, Oklahoma City
Notable Auxiliary / Auxiliary I-280Bay Area, Quad Cities, New Jersey
Notable Auxiliary / Auxiliary I-880Bay Area and Council Bluffs
Notable