Located at the top of State Street on the Square in Madison, WI, the 100 Block project consists of 51,000 sf of a mix of renovated historical buildings and new multi-story office and retail buildings on an irregular parcel of land with three street elevations. Partial historic building facades were held in place while existing structures behind were demolished and reconstructed with either strengthened existing structural systems or new construction. New building construction systems consisted of composite steel and concrete framed buildings, with some cast-in-place portions, all supported on conventional spread footings.