The Jeep left the roadway and crashed at about 1:15 p.m. The California Highway Patrol and Cal Fire responded.
CHP Officer Ryan O' Day said a CHP helicopter was sent to the scene.
A Cal Fire spokesman said the occupant was extricated from the Jeep and flown to a hospital.
The Jeep went about 50 feet down the embankment but did not catch fire, the spokesman said.