The driver of a big rig was rescued from the burning truck after it crashed into a wall on the side of the 5 Freeway in Anaheim Friday morning and caught fire.
The crash near Euclid Street was reported at about 12:45 a.m. Boxes of from the truck spilled across lanes, according to the California Highway Patrol.
At least two California Highway Patrol officers helped the driver escape the burning truck. The 43-year-old driver was hospitalized, but details about injuries were not immediately available.
The driver was trapped in the cab, the CHP said.
"They did put themselves at great risk of harm by attempting to retrieve the driver from the tractor, but due to his injuries, apparently, or his state of awareness he was not able to (free himself)," CHP Sgt. Janelle Bautista said.
Investigators were attempting to determine whether the driver fell asleep at the wheel when the truck veered onto the shoulder of the road.
A SigAlert was issued for the northbound lanes of the Santa Ana Freeway just south of the Euclid Street overpass, the CHP said.