Historically, this section of Archer was a part of Illinois Route 4, the original 1924 highway connecting St. Louis and Chicago. In 1926, Route 4 was rerouted to the north side of the Des Plaines River on an alignment that subsequently became U.S. Route 66, and its former route on Archer was redesignated as Illinois Route 4A.
Historically, this section of Archer Road was part of a highway called Illinois Route 4, which connected St. Louis and Chicago in 1924. In 1926, the route was rerouted to the north side of the Des Plaines River, forming what became U.S. Route 66. The former path on Archer Road was then designated as Illinois Route 4A.