HIGHLAND (CBSLA.com) – Hundreds of firefighters Saturday morning continued to battle a 450-acre brush fire that was burning near the San Bernardino County community of Highland.

The Bridge Fire broke out before 2:24 p.m. Friday on the edge of the San Bernardino National Forest, near Greenspot and Santa Ana Canyon roads.

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As of 12:45 p.m. Saturday, the blaze was 35 percent contained, according to CAL Fire. About 470 personnel with several agencies were battling the fire, which was burning through grass and chaparral. The Bridge Fire’s forward progress was stopped Friday night, CAL Fire said.

Greenspot Road was closed a half-mile south of Iron Bridge and north to Iron Bridge.

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No immediate structures were threatened and no evacuations had been issued. Firefighters were standing by some homes in the area just in case.

“It’s pretty worrisome, especially like right now the winds are fairly light,” homeowner Bob Lines told CBS2 Friday evening. “But right now, it’s doing a good job for us, because when the east winds come, this will be gone.”

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The cause of the fire is under investigation. The U.S. Forest Service and the San Bernardino County Fire Department were among the agencies involved in the firefight.