SAN MATEO (CBS SF) — Fire crews have extinguished a brush fire near Highway 92 in San Mateo that briefly closed all westbound lanes has heavy smoke obscured the roadway, according to authorities.

CHP with the Redwood City office tweeted a photo showing a massive cloud of smoke due to the fire shortly after 6 p.m. on Highway 92 near the Ralston exit.

Motorists were being advised to avoid the area in both directions due to the fire.

The San Mateo Consolidated Fire Department and Cal Fire are at the scene. Residents on social media are reporting heavy smoke.

Cal Fire had previously reported that the fire had been knocked down after initially being reported at around 5:22 p.m. At least three engines responded.

Twitter users were posting that traffic was moving again shortly before 6:30 p.m.

Cal Fire tweeted at 6:35 p.m. that forward progress of the fire had been stopped. The fire had burned about a quarter of an acre.

According to fire officials, fire started in grass and wood chips and put out a large amount of smoke, but no homes or buildings were threatened, officials said.