the section from 59th street to 72nd street was begun in september 1930, and opened to traffic on march 9, 1932. the original configuration fed directly into 72nd street, with a 90-degree turn in the road. once the northern extension as a parkway was built, northbound traffic would turn right directly to and from 72nd street. a southbound left-hand entrance ramp was provided at 72nd street, with a direct ramp from riverside drive (later closed), and a southbound right-hand exit ramp to 70th street was started, but never completed. today, the only movement remaining is a northbound entrance to the highway from 72nd street.