The closure is in effect between Lincoln Way and Sloat Boulevard and is scheduled to last through the weekend. It marks the second time the roadway has been shut down so crews can complete repaving work.
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One southbound lane will remain open for public transit and emergency vehicles.
Caltrans advised drivers looking to avoid delays to use the Great Highway and Sunset Boulevard as alternate routes. The current closure follows similar work completed last month in the northbound direction.
That earlier project wrapped up a few hours ahead of schedule. In a briefing Thursday, Caltrans said it is hopeful the repaving underway during this closure will also be completed efficiently.
Another closure is planned for the weekend of May 22, when both northbound and southbound lanes will be shut down along a shorter section of 19th Avenue.
Supervisor Alan Wong, who represents the district, is expected to speak later Friday about the closure and the long-term impacts he hopes the project will have.
For more information, click on the links below.
Project page: https://bit.ly/3PKYF2v
Caltrans QuickMap (realtime traffic): https://quickmap.dot.ca.gov/
511 Bay Area updates: https://twitter.com/511SFBay