The Dolan Fire near Big Sur has burned 94,034 acres and is 20% contained, according to CalFire.
The fire grew another 20,000 acres overnight prompting more evacuations and road closures, including Highway 1 at Ragged Point.
Crews are improving fire breaks near Fort Hunter Liggett after the Dolan Fire breached training areas, according to the Army base.
"Over the next 24 hours, [Fort} Hunter Liggett crews and forest service crews, using heavy equipment like dozers, will be up in training areas 2 working to fortify and improve fire breaks."
Authorities say the fire began on August 18. A Fresno man has been arrested on arson charges.