Fire crews were sent out to Del Mar Monday after a brush fire broke out near the freeway.
Caltrans tweeted out at a little after 12:45 that the southbound Del Mar Heights Road offramp was closed to traffic. The closure remained for about two hours, according to Caltrans.
By 1:10 p.m., traffic in the area had backed up significantly. Light gray smoke was visible from the fire, which was burning near several structures that were close to the freeway.
Fire trucks were set up on the off-ramp to fight the fire, and were also up the hillside, near where the structures had been threatened.
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By 1:15 p.m., firefighters had gained the upper hand in the battle, and little smoke was visible from overhead where Sky Ranger 7 was able to record video of the fire. Crews will likely spend the next several hours mopping up hot spots.
A Caltrans representative said at about 2:45 p.m. that all lanes had been reopened.
The cause of the fire has not yet been identified.