In the state of Illinois, Interstate 74 runs south from Iowa to Galesburg; from this point it runs southeast through Peoria to the Bloomington-Normal area and Interstate 55. I-74 continues southeast to the Champaign-Urbana area, intersecting with Interstate 57. The interstate then runs east past Danville at the Illinois-Indiana state line. U.S. Route 150 parallels Interstate 74 in Illinois for its entire length, save the last few miles on the eastern end (in Danville, when US 150 turns south on Illinois 1), where it parallels U.S. Route 136.
Interstate 74 Illinois Descriptions - iTravel.mobi