Optima, Inc.
Optima, Inc.
C.S. Associates, Inc.
220 East Illinois Street, Chicago, IL, United States

Optima Signature is a 55-story mixed-use building located at 220 East Illinois.  The project incorporates retail, parking, office, residential, amenities, and mechanical elements.  Concrete Structures was responsible for the structural design/build component of the development.  Construction of the downtown project incorporated a 4½ story temporary wind screen around the entire perimeter that moved up with the typical four-day construction cycle.  The project was successfully accelerated to deliver an early occupancy, thus providing a major advantage to our client prior to the start of a very competitive rental market.