(Updated at 4:35 p.m.) Arlington County firefighters and paramedics responded to a serious multi-vehicle accident on the GW Parkway this afternoon.
The accident happened just after 2:00 p.m. near the Windy Run overpass, northwest of Spout Run. Three vehicles collided in the northbound lanes, sending one of the cars off the roadway and down an embankment, nearly to the Potomac below.