The blaze forced the closure of Highway 71 to allow fire personnel and equipment into the area.
There were no reports of injuries or damages.
"I didn't really think anything of it until I looked outside and saw where it was," said Karen Buma of the Yorba Slaughter Adobe, a historical building that was near the fire.
"What really helped was that the sun went down, the humidity went up and it was really able to help slow the progression of the fire," said Massiel De Guevara with the Chino Valley Fire Department. "
Firefighters expect to conduct a mopup of the area to prevent further flameups.
The /*California Highway Patrol*/ was working to begin reopening lanes of Highway 71 on Saturday night.
The cause of the fire is not yet known.
