Interstate90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,021 miles (4,862 km). It begins
Transportation Department of Illinois for Establishment of an Interstate Route" (PDF). Letter to Bud Wright. Springfield: Illinois Department of Transportation
Interstate 294 (I-294) is a tolled auxiliary Interstate Highway in the northeastern part of the U.S. state of Illinois. Forming the southern portion of
18-mile-long (29 km) freeway in Chicago, Illinois, United States. Portions of the freeway carry I-190, I-90 and I-94. The freeway runs in a southeast–northwest
across four counties inIllinois and Iowa. It is located four miles (6.4 km) from the intersection of Interstate 80 and Interstate 88, 165 miles (266 km)