To find information about freeway closures in Southern California, visit DOT.CA.gov, and click Planned Lane Closures under Check Current Highway Conditions. Click a district on the map under Welcome to Caltrans Planned Lane Closures, and check for closures by a number of criteria including route and date. Alternatively, call 1-800-427-7623.
As of 2015, the DOT.CA.gov website also offers the Caltrans QuickMap that displays real-time traffic information, including traffic incidents and lane closures. Check Lane Closures in the menu under Caltrans Quick Map, and choose Zoom to Los Angeles, San Bernadino or San Diego to view the locations of lane closures in these areas. Click a traffic cone icon to view a pop-up box containing detailed information about the closure.