The city is planning a groundbreaking ceremony for the Main Street Corridor realignment project on Oct. 16 at 2 p.m. in the courtyard of the Peabody Institute Library, 82 Main St. Mayor Ted Bettencourt will be joined at the ceremony by Lieutenant Governor Timothy Murray, members of the city’s legislative delegation, business owners, representatives from the Chamber of Commerce, and others. The public is welcome to attend. The $1.9 million project, the product of years of planning and debate, calls for road realignment and streetscape upgrades along a 1-mile stretch of Main Street from Peabody Square to Howley Street at the Salem line. The number of travel lanes will be reduced from four to two. Designated left-turn lanes will be added along much of the corridor, however, so the street would effectively become a three-lane road. The plan also involves new curb crossings, a pedestrian island, a short median strip in front of the public library, planters with new trees, and enhanced crosswalks. “This project represents an exciting new vision for downtown Peabody,” Bettencourt said.