An Early Morning Multi Vehicle Crash On Interstate 81 In Washington County Virginia Has Left One Person Injured. It Happened Monday Morning When A Tractor Trailer Traveling South Near Exit 19 Pulled Off The Shoulder Due To Heavy Fog. A Chevrolet Pickup Truck Also Traveling South Hit The Back Of The Parked Tractor Trailer. The Impact Pushed The Pickup Truck Back Into The Southbound Lane Where It Struck Another Tractor Trailer. The Second Tractor Trailer Ran Off The Left Side Of I-81 And Hit A Guardrail Coming To A Stop In The Northbound Lanes. The Criver Of The Pickup Truck Was Taken To The Hospital For Serious Injuries. The Virginia State Police Are Continuing To Investigate.