"It's moved fast, and we've had no rain days at all," said Derek Dugan, the center's community relations director.
With a projected opening in June 2011, workers expect to finish masonry walls for the pool and fitness center this week. Work on the roof and exterior brick walls should start sometime in June.
"See those two big holes? That's where the water slide will go through -- and in," Dugan said during a tour of the construction site Tuesday. "And out in front, this will all open up to a sun deck facing Broad Street."
The 17-acre, 100,000-square-foot project will include an aquatics center, performing arts hall, gymnasium, amphitheater and many other amenities, in addition to a "first stop center" that will include space for social service organizations.
Construction so far has brought relatively few surprises, Dugan said.
"We did find a sewer line that was not shown on any of the city maps, so we had to work around it," he said.
One significant change in the design was the addition of a 25-person orchestra pit and related support facilities to the performing arts hall.
"In communicating with the arts groups, they believed that was essential to the long-term success of rental of the facility for performances," Dugan said.
In addition to site work and masonry walls, many of the houses acquired for the project have been renovated and are being used as offices and training facilities.
R.W. Allen, the contractor on the project, has about 60 workers at the site now. Once opened, the Kroc Center will employ an estimated 102.
The total investment, including a permanent operating endowment, will be almost $100 million.
The Ray & Joan Kroc estate is providing a total gift of $67.8 million.