All but one lane of the northbound 5 Freeway will be closed tonight in the Castaic area for crews working to prevent further mudslides.

Between 7 p.m. and 10 p.m. tonight, all but one lane on the northbound 5 Freeway will be closed near Templin Highway as crews work to shore up a three-day-old mudslide.

The lanes will be closed tonight starting three miles south of Templin Highway, or about seven miles north of the city of Santa Clarita.

I-5 normally has four northbound lanes but has been temporarily reduced to only two northbound lanes since Tuesday when a mudslide near Templin Highway blocked the right two lanes.

The California Department of Transportation (Caltrans) plans to close one lane of the freeway, leaving just one lane open for northbound traffic.

Crews will place temporary concrete barriers, known as k-rail, at the mudslide. The k-rails will limit additional damage during the next series of storms expected this weekend.

The schedule is weather-permitting and subject to change due to operational issues.

Motorists should avoid non-essential travel in the area, according to Caltrans. If travel is necessary, drivers should allow extra travel time and expect delays.

Highway closures can be seen using Caltrans’ QuickMap service.

Ed. Note: The above information was provided to KHTS by Caltrans.

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