ROCKVILLE, MD. — Bethesda, Md.-based Washington Property Company has broken ground on The Summit at Washingtonian, a two-building complex in Rockville. Completion of the first phase, an eight-story, 200,000-square-foot LEED-certified office building and adjacent parking structure, is scheduled for March 2009. The project is located at the intersection of Interstate 270 and Shady Grove Rd. Wisnewski Blair & Associates are the project architect.