Originally constructed in 1955, the below-grade parking structure is used by residents in nearby buildings. The structure was turned over to Grand Circus Holdings, LLC in a state of severe damage with falling concrete, potholes, and water dripping through the slab, leaving mineral deposits on vehicles, so a condition assessment was performed. Based on the findings, a major repair and replacement project was needed, including replacing all elevated slabs and localized repairs to all other structural components.

In order to meet the budget requirements, PULLMAN and the Engineer of Record teamed up to propose a design-build approach to the repairs. Along with cost-savings, this approach provided a more streamlined design process and overall schedule. After the condition assessment and design, the scope of work included repairing concrete slab, columns and walls, adding new slab sealants and coating, beam restoration, stair tower repairs (block walls, treads, railing), removing and replacing all plumbing, electrical, and fire suppression systems, replacing two elevators, repairing exterior facade limestone panels, and installing overhead roll up doors.

The crew discovered that the concrete had a void present in the horizontal plane over much of the slab, making the repair area much larger than anticipated. In order to remove the deteriorated concrete, the crew used several demolition methods, including a pneumatic chipping gun, hydro-demolition, and a full depth sawcut to remove the concrete in sections.

The team created site specific safety standards and quality control checklists for critical tasks that were used for everyone on site.