Northbound and southbound lanes on Waterview Parkway between Synergy Park Boulevard and Frankford Road will be closed at all times beginning at 9 a.m. Friday, Aug. 4 and ending at 3:30 p.m. Monday, Aug. 7 as rail is installed at the DART Silver Line Guideway Crossing across Waterview Parkway. Detour signs will be in place but motorists are advised to avoid the area if possible.