All schematics are preliminary except as noted.
This article describes the new tollway, which opened on August 27, 1957. In 1960, the freeway on the south side of downtown was designated as Interstate 20. Construction on Interstate 20 had not yet begun. This image from the 1960 Turnpike Authority annual report shows the planned route of the freeway. This undated photo appears to be from 1963, midway through construction.