SIZE: The 54-story building features 1.2 million square feet of office space with a unique superstructure and footprint that takes up just 25 percent of the two-acre lot. DEVELOPER: Riverside, Anthony Scacco, Executive Vice President ARCHITECT: Goettsch Partners Inc., Jim Goettsch, Partner STRUCTURAL ENGINEER: Magnusson Klemencic Associates (MKA), Robert A. Chmielowski, Principal CONTRACTOR: Clark Construction Group-Chicago LLC, Chris Phares, Project Executive