The California Highway Patrol is investigating a traffic accident that occurred Wednesday night.

According to the El Cajon CHP Office , a big rig was eastbound on Interstate 8 between Sunrise Highway and Buckman Springs Road when it plunged off a bridge and crashed and then burned. The truck driver died in the crash.  The flames from the wreckage started a brush fire and totally destroyed the truck. The westbound lanes of the freeway were closed for about three hours. Causer of the accident is under investigation.