Site preparation work is beginning Thursday on the overhaul of the interchange of Interstate 285 and Georgia 400.

Work crews with North Perimeter Contractors, which won a $460 million contract to design, build and help finance the project, also will start landscaping activities at the site. Both day and nighttime work is planned.

“Crews will remove trees and other vegetation from the right of way and within the interchange for the new collector-distributor lanes that will be built on the sides…