A 19-year-old male is in critical condition in a Phoenix hospital after a single vehicle accident Tuesday night in Prescott. Police say Brock Everist of Dewey was driving westbound on Highway 89A in a Toyota sedan at around 10:45 p.m. when he left the highway and into the center median. The vehicle hit the protection barrels in front of the overpass at Granite Dells Parkway. After the car hit the barrels, it went airborne and hit a bridge support pillar head on. The car landed in the eastbound lanes of the highway, where it came to rest under the overpass and caught fire. Everist sustained significant injuries and was flown to a Phoenix hospital. Police are asking anyone who saw the accident, to call them at (928) 777-1999. The accident remains under investigation.