The next year, the 1935 map shows that the section of former IL 4A from Summit to Lyons had been designated as IL 213. It also shows IL 4A truncated to the intersection of Garfield Boulevard and South Park Boulevard, which had been designated US 330. By 1939 IL 4A had been rerouted from 55th Street, more directly into Downtown Chicago on Archer Avenue. In 1935, IL 4, IL 4A's parent route, was truncated to end at Springfield, having been replaced by US 66 from Springfield to Chicago. This left IL 4A from Joliet to Chicago as an odd remote orphan of its Downstate parent route until it was eliminated in 1967.