Investigators said the truck appeared to veer off the roadway and tumble down the mountainside before coming to rest at the bottom of the cliff.
CHP later found the driver was allegedly impaired and arrested the individual on suspicion of driving under the influence; authorities did not release the driver's identity or injury details.
Photos showed the pickup mangled beyond recognition with debris scattered across the rocky slope, underscoring CHP's warning that impaired driving can have devastating but preventable consequences.