The crash happened this afternoon in the southbound lanes of the parkway in Arlington near Donaldson Run. One person is being evaluated for potentially serious injuries.
The U.S. Park Police helicopter, Eagle 1, was called in to transport the patient, prompting the closure of the entire parkway, according to scanner traffic. Arlington County medics are also on scene.
— WTOP Traffic (@WTOPtraffic) May 10, 2018
File photo from 2014, above, courtesy @CAPT258