A brush fire burned in San Marcos near the SR-78, California Highway Patrol authorities said.
Smoke was blowing onto the freeway near the SR-78 and Sycamore Avenue at about 1:45 p.m., according to a CHP report.
As fire authorities responded, the fire was beginning to burn onto the freeway. Shortly after, another fire started on the other side of the freeway, according to the CHP.
CHP issued a SigAlert, which stated that a car fire was also reportedly burning nearby.
The San Diego County Sheriff's Department shut down all but one lane of the eastbound SR-78, and authorities are diverting traffic at the Las Posas exit. By 2:51 p.m., all lanes were open.
The westbound side of the freeway is open but traffic was momentarily stopped on both sides of the fire as crews arrived to battle the flames.
By about 2:20 p.m., crews knocked down the fire.
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