IL
Interstates in Illinois
17 Interstate routes run through Illinois: 13 primary, 4 auxiliary.
Primary / East-west
I-24
Southern Illinois to Chattanooga
Active Primary / North-south I-39Bloomington-Normal to Wausau
Active Primary / North-south I-41Milwaukee region to Green Bay
Active Primary / North-south I-55New Orleans to Chicago
Active Primary / North-south I-57Sikeston to Chicago
Active Primary / East-west I-64St. Louis to Hampton Roads
Active Primary / East-west I-70Cove Fort to Baltimore
Active Primary / East-west I-72Hannibal to Champaign
Active Primary / East-west I-74Midwest and Carolinas segments
Active Primary / East-west I-80San Francisco to Teaneck
Active Primary / East-west I-88Quad Cities to Chicago region
Active Primary / East-west I-90Seattle to Boston
Active Primary / East-west I-94Billings to Port Huron
Active Auxiliary / Auxiliary I-190Chicago, Worcester, Buffalo/Niagara
Notable Auxiliary / Auxiliary I-270Denver, St. Louis, Washington, Columbus
Notable Auxiliary / Auxiliary I-280Bay Area, Quad Cities, New Jersey
Notable Auxiliary / Auxiliary I-290Chicago, Worcester, Buffalo
Notable