BREA (CBS) — Authorities say a brush fire that has scorched more than 500 acres was 87 percent contained Friday, allowing them to reopen a canyon road through the area.

The fire broke out about 11:15 a.m. Thursday north of Carbon Canyon Road and west of Olinda Village, a neighborhood of tract houses and mobile homes. Carbon Canyon Road was shut down so that firefighters could battle the blaze.

The blaze has burned 508 acres as of 1 p.m. Friday, but was 87 percent contained, Brea-Fullerton Battalion Chief Steve Wood said.

No injuries were reported and no evacuations were ordered. Carbon Canyon Road was reopened Friday at noon.

Firefighters used fire engines with 4-wheel drive to reach burning ridges inaccessible to other vehicles.

There were about 280 firefighters on the fire lines as of 12:40 p.m., Wood said. They were mostly on mop-up duty as the blaze was not spreading, he said.

Firefighters from Brea, Fullerton, the Orange County Fire Authority, the Los Angeles County Fire Department, Cal Fire and the Chino Valley were battling the blaze. Two OCFA helicopters and an airplane were deployed to douse the flames.

(©2011 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Wire services contributed to this report.)

(©2011 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Wire services contributed to this report.)