The collision involving two big rigs near the Grapevine on Thursday sparked a 338-acre brush fire and spilled 6,000 gallons of hot liquid asphalt, the California Highway Patrol reported.
The 2:30 p.m. crash closed all lanes of southbound Interstate 5 for 90 minutes as fires were extinguished and traffic backed up. The No. 1 lane reopened just before 4 p.m., officers said.
According to the CHP, one of the big rigs was driving at 55 to 60 mph and crashed into the rear of a slower-moving big rig. The first vehicle "became fully engulfed in flames," officers said, and its driver suffered burns to his right arm and cuts to his left calf and face.
He was taken by ambulance to a hospital. The driver of the other vehicle was uninjured, but the tank trailer on his rig ruptured and spilled the asphalt.
Alcohol or drugs are not suspected, the CHP reported.