CLEVELAND-Chicago-based Merchandise Mart Properties Inc. is unveiling all over town its lakefront, underground-with-above-ground park design for the proposed Cleveland Medical Mart and Convention Center. The company, with general contractor Turner Construction, says it still believes it can break ground on the $425 million project at the corner of Mall Drive and St. Clair in October.

The new design is being marketed at different meetings, including Cleveland’s Design Review Committee, Landmarks Commission and City Planning Commission. Attorney Jeff Appelbaum is presenting the plan on behalf of the complex’s future owner, Cuyahoga County.

“We have four lines we’re working, including completing all the real estate deals, financing, legal agreements and design work,” Appelbaum tells GlobeSt.com. The county has already collected about $100 million for the project through sales-tax revenue, he says.

The complex will have a park-like feel not unlike Millennium Park in Chicago, according to the designs by LMN Architects and Gustafson Guthrie Nichol, both based in Seattle. The city is selling the land, which contains an older convention center to the county.

One standout feature of the project will be the four-story, glass-enclosed Medical Mart. An MMPI spokesman says the facility can be likened to a shopping mall for hospital administrators, a large segment of the Cleveland business class. “The Greater Cleveland region employs more than 230,000 healthcare professionals, including 36,000 at Cleveland Clinic and 25,000 at University Hospitals, along with MetroHealth Medical Center, Summa Health System, Akron General, and Akron Children’s Hospital. Cleveland Clinic has been recognized as a delivery and treatment model of the future, drawing a continuous flow of medical professionals, patients, and cutting-edge technology. And, there are more than 600 biomedical companies located in Northeast Ohio,” he tells GlobeSt.com.

If all approvals are met, the facility, with 300,000 square feet of industry meeting space, will open in fall 2013. The 19-member Cleveland City Council must ultimately approve the project.