 A stretch of westbound Leesburg Pike in Fairfax County is now open. It was closed for a time following a deadly accident involving a pedestrian early this morning. A woman was hit and killed by a car while walking in the area of Leesburg Pike and Downey Drive by Great Falls around 4 a.m. Fairfax County police say the woman died at the scene and the driver stayed on the scene. Police are still investigating.