RCFD units on scene of a Vehicle Accident-Commercial on Interstate 70 East Mile 43. A dry van struck a passenger vehicle and went over an embankment. Crews extricated the occupant from a wooded area to Rostraver West Newton Emergency Services waiting on Finley Rd. The patient was transported by LifeFlight from a Landing Zone at the Amcel Center. Rostraver Vfd #1 Webster assisted at the LZ.