Upscale grocery store Wegmans will be coming to Chantilly, anchoring a new shopping center that will include other restaurants and retail.

The Board of Supervisors signed off on property owner Regency Centers’ development plans for the almost 21-acre site today. The shopping complex will be located on an empty field on the north side of Westfields Boulevard at Newbrook Drive.

At 140,000 square feet, the Wegmans will be one of the company’s “large format” stores, and it will be third location in Fairfax County for the grocer based in upstate New York. Announced this summer, a fourth, urban-sized store is planned as part of Capital One’s major redevelopment of its campus in Tysons.

The Chantilly store will feature the chain’s iconic, New England-style clock tower that will top off the building at 80 feet. The surface parking lot in front of the store will offer about 716 spaces, plus three dedicated spaces for low-emissions vehicles and bike racks.

In addition to Wegmans, there will be another 46,000 square feet in restaurants and shops spread across five buildings. These will face Westfields Boulevard.

The plan also calls for completing Newbrook Drive on the north side of Westfields. The private drive currently makes half a loop around the future shopping center site. It will circle back to a new intersection further north on Westfields.

Shoppers will enter the complex from three entrances on Newbrook Drive. To deal with more traffic, the developer will add more turn lanes on Westfields, remove traffic islands and redesign the intersections to make them safer.

Pedestrian improvements are included in the designs. A 10-foot, asphalt bike and walking trail will be built along Westfields. It will connect to a six-foot landscaped sidewalk that will run around the entire shopping center, offering fitness stations, seating, public art or other amenities. Two landscaped paths within the center will connect the restaurants, shops and Wegmans.

The plans incorporate a 40-foot wide, linear park along Newbrook Drive, and the center will include four plazas. Overall, 16 percent of the site will be open space, including landscape areas, seating and walkways.

The entire 21-acre site was approved nine years ago for offices, hotel and retail, as part of a larger 1.4 million development called Commonwealth Centre. Regency said it changed plans for this site because retail and restaurants will help to fill vacancies in the about eight million square feet of office space in the area.