The brush fire ignited Tuesday morning near the 2500 block of Rye Canyon Loop. Less than two hours later, it had spread to 5,000 acres, according to the Los Angeles County Fire Department. One structure was destroyed.
More than 800 personnel responded to the scene; one of them was injured in the firefight.
The origin of the blaze was north of Newhall Ranch Road and west of the 5 Freeway. The interstate was temporarily closed in the burn area, but traffic resumed in both directions by 2 p.m.
The Rye Fire, whose cause remains under investigation, is expected to be fully contained by Dec. 15, fire officials said.