The historic double-digit highway that connected Chicago and Los Angeles was Route 66, also known as the "Mother Road." Established in the 1920s, Route 66 spanned over 2,400 miles and became a vital transportation route for travelers, migrants, and businesses.
The iconic highway passed through eight states, including Illinois, Missouri, Kansas, Oklahoma, Texas, New Mexico, Arizona, and California, and featured unique roadside attractions, such as diners, motels, and gas stations.