At 4 p.m., officials said one structrure was affected and half an acre was burned.
Earlier, large flames were seen along the highway and asked people to avoid the area.
No injuries have been reported and officials are investigating the cause.
UPDATE 2ND ALARM WILDLAND FIRE CREWS HAVE STOPPED FORWARD PROGRESS WITH NO REPORTED INJURIES AVOID AREA 1400 Hrs https://t.co/JNJk3NxmBl— SAN FRANCISCO FIRE DEPARTMENT MEDIA (@SFFDPIO) August 15, 2020
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