The California Department of Transportation (Caltrans) will continue both daytime and overnight lane closures along Topanga Canyon Boulevard (State Route 27) beginning Monday, July 28, as part of an ongoing project to repave the roadway and upgrade accessibility infrastructure throughout the San Fernando Valley and the unincorporated Topanga area.
From July 28 to August 1, daytime construction will impact the northbound right lane at Parthenia Street between 6 a.m. and 3 p.m. During the same period, Caltrans crews will conduct overnight striping work between Devonshire Street and Roscoe Boulevard, closing up to two lanes in both directions from 7 p.m. to 6 a.m.
The closures are weather-permitting and may change without notice. Motorists are encouraged to plan ahead, expect delays, and use alternate routes whenever possible.
The work is part of a larger effort to improve more than 18 miles of SR-27, stretching from Pacific Coast Highway to Devonshire Street. In addition to repaving, the project includes the installation of upgraded curb ramps, pedestrian push buttons, and bus pads to improve access and safety for all road users.
Residents and businesses near the work zones should prepare for noise, vibrations, and dust during construction hours.
For real-time traffic updates and closure information, travelers are encouraged to check the Caltrans QuickMap before hitting the road.
Caltrans reminds drivers to remain vigilant in work zones: “Be Work Zone Alert” and “Slow for the Cone Zone.”