It serves as the northern boundary of Grant Park and the Chicago Landmark Historic Michigan Boulevard District.

Between 1970 and 1980, the viaduct was demolished east of Columbus; this probably happened after the extension of Wacker Drive to Lake Shore opened in December 1975.

The old viaduct was kept west of Columbus, and it slopes down to a middle level east towards the new Lake Shore Drive.

The upper level carries local traffic to the Illinois Center, Aon Center and Prudential Plaza developments, and was built in conjunction with them; it also takes traffic to the new Lakeshore East development.

A new Upper Field Boulevard was recently built as part of the Lakeshore East development; it ramps down to ground (lower) level.

The middle level then continues east to an interchange with Lake Shore Drive and a dead end just beyond.