Plans are underway on a long-term project to construct a medical campus behind BJ’s on Reidville Drive and the residential development off of Saddle Rock Road, which city officials said will spur economic growth. In January of this year, the city’s Zoning Commission approved changing the designation of the 40-acre site from single-family residential to commercial and supporting the project. The property is owned by 84 Vistas LLC, whose principals include developers Curt Jones, Joe Pisani, and Robert LaFlamme. Pisani said the first step in the project is clearing the trees, followed by land preparation. He said the project could take a couple of years to complete. The proposed medical campus will consist of four buildings varying in size, the largest at 100,000 square feet, with all the buildings arranged in a block with a shared parking space, said Robert Nerney, city planner.