California Weekend Traffic Alert: 405 Lane Cuts and SR-133 Night Closures Set to Snarl California Travel This Weekend
Southern California: The 405 Is Still the Big One
If you are driving Los Angeles this weekend, the I-405 Pavement Rehabilitation Project through the Sepulveda Pass remains the corridor to avoid. The $143.7 million repave between Van Nuys and Westwood keeps producing overnight northbound lane reductions and ramp closures, and Caltrans has scheduled K-rail and survey work the week of June 22 to 26. Expect the heaviest squeeze overnight, when crews drop the northbound 405 to as few as two lanes and close ramps near Getty Center Drive.
Orange County: SR-133 Night Closures in Irvine
Closer to home for South County drivers, the southbound connector to northbound SR-133 in Irvine closes nightly from 11:59 p.m. to 5 a.m., Tuesday through Sunday, through June 21. Plan a QuickMap check before any late-night Toll Roads run, since detours route you off the connector entirely.
Bay Area: I-80 Bayshore Rehab Keeps Closing Lanes
Up north, San Francisco's two-year Central and Bayshore viaduct rehabilitation continues to trigger weekend closures on eastbound I-80 near the Bay Bridge, typically in 55-hour Friday-night-to-Monday windows. Congestion spills into SoMa and Mission Bay when it hits, so verify the current weekend before heading downtown.
How to Avoid the Worst of It
Most of this work lands overnight, so daytime trips stay relatively clear. For the 405, southbound traffic is largely spared, and Sepulveda Boulevard works as a parallel surface route. Build in extra time after 10 p.m. and lean on Caltrans QuickMap for live conditions.
What to Watch Next
The 405's June 22 to 26 work sets up the next extended weekend lane reduction, which Caltrans runs roughly every two weeks. Schedules move for weather, so confirm before you go.
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This story was originally published June 19, 2026 at 3:05 PM.