 A stretch of westbound Leesburg Pike in Fairfax County is open this afternoon. It was shut down for 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. The driver stayed on scene. Police are still investigating the crash.