"This was a painstaking process," Healy says.

Available laydown space was at a premium thanks to the 200-ft by 300-ft site, adds Healy. "We are literally surrounded by public sidewalks on all four sides of the project, so our staging area is pretty limited."

To get a little extra staging room, the team is using a section of open ground atop one end of the underground parking garage, which extends past the building dimensions on the back side.

The project, which broke ground in May 2012, is scheduled for completion in late 2014. When it opens, the museum will house more than 2,000 pieces of art from both The Broad Foundation and the Broad family's collection for a total of 50,000 sq ft of exhibit space.