
The Commerce 811 Main Garage Addition is a 114,912-square-foot, six-level, 399-car commercial parking garage addition tied to the existing structure. A pedestrian bridge was constructed above the alley to connect the southwest stair tower to the existing garage. The project used cast-in-place concrete as the primary skin material and included a tensile roof structure and metal panels on the elevator penthouse and stair tower ceilings. The structure also features glass enclosed stair towers, decorative precast spandrel panels, and landscaping planters.