 Fairfax County police say it happened around 4 o'clock on Leesburg Pike at Downey Drive by Great Falls. The woman died at the scene. The driver of the striking vehicle did remain on scene. Police still investigating that crash. At last report, the westbound lanes of Leesburg Pike had been shut down at Downey Drive. Stay with WTOP as we update the status of the road in traffic and weather on the 8th.