The entire structure was wrapped by a spiraling roadway that Wright called the "Grand Auto Ramp", which accommodated traffic in both directions and would have been  long. Wright's drawings for the project were enormous: Levine describes them as "over eight feet [2.5 m] long by almost five feet [1.5 m] high".
The entire structure was surrounded by a spiraling roadway that Wright named the "Grand Auto Ramp", which managed traffic in both directions and would have been very long. Wright's drawings for this project were extensive: Levine described them as "over eight feet [2.5 m] wide by almost five feet [1.5 m] high".