The crash happened about 11:15 a.m. when the minivan, heading south on Chrisman Road, veered into the right-hand shoulder and hit a small tree and Pacific Gas and Electric Co. power pole.
The impact uprooted the tree and sheared off the base of the PG&E high-voltage power pole on the west side of the road. The pole was left suspended by the power lines but continued to lean toward the roadway.
California Highway Patrol shut the road down between Schulte and Cabe roads until PG&E crews could repair the damaged utility pole.
CHP officers are investigating the cause of the crash. No other vehicles were involved.