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NewsSanta Monica MirrorOctober 26, 2026Los Angeles County

Caltrans restricts Pacific Coast Highway to single nightly lanes for slope and storm repairs

Photo: Santa Monica Mirror

Caltrans is restricting traffic on Pacific Coast Highway to a single lane in both directions nightly from 9 p.m. to 5 a.m., starting Monday, Oct. 26, through Friday, Oct. 30. The closures affect the stretch between Topanga Canyon Boulevard and Sunset Boulevard to allow crews to perform slope repair operations. Additionally, emergency shoreline reinforcement work is underway at Thornhill Broome Beach to protect the roadway from upcoming winter storms.

TransportationPublic WorksEmergency ServicesWeather
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Why It Matters

Nighttime drivers navigating State Route 1 between Topanga Canyon and Sunset Boulevard will face significant travel delays during the five-day work period.

Key Facts

  • State Route 1 (Pacific Coast Highway) will drop to a single lane in both directions between Topanga Canyon Boulevard and Sunset Boulevard.
  • Lane restrictions will be in effect from 9 p.m. to 5 a.m. nightly.
  • The restriction period runs from Monday, Oct. 26, through Friday, Oct. 30.
  • Maintenance crews are executing slope repair operations along the coastal bluffs during the closures.
  • Emergency reinforcement work is underway along Thornhill Broome Beach north of Sycamore Canyon Road.
  • Crews are placing heavy rock slope protection barriers directly against the surf line.
  • The shoreline stabilization initiatives span vulnerable zones in Los Angeles and Ventura counties.
  • Projects are accelerated in anticipation of an approaching El Niño winter bringing heightened surf and heavy storm runoff.
  • Motorists can monitor real-time traffic conditions through Caltrans' QuickMap application.

Who's Mentioned

locationSycamore Canyon Road“Reference point south of Thornhill Broome Beach.”locationSunset Boulevard“Northern boundary of the PCH nighttime lane restrictions.”locationLos Angeles County“Region targeted for shoreline stabilization initiatives.”locationVentura County“Region targeted for shoreline stabilization initiatives.”locationThornhill Broome Beach“Site of emergency shoreline reinforcement work.”locationTopanga Canyon“Southern boundary of the PCH nighttime lane restrictions.”OrganizationCalifornia Department of Transportation“Provides real-time highway restriction data through QuickMap.”OrganizationCaltrans“Executing slope repair operations and shoreline reinforcement.”