Planned Construction Activity

Visit the Planned Lane Closures interactive website.

Upcoming Caltrans Closures/Activities as of 07/29/2022:

WHEN: Friday, August 5 at 8:00 p.m. through Monday, August 8 at 5:00 a.m.

Starting on Friday, August 5 at 8:00 p.m. Caltrans will be conducting a 55-hour closure to grind and overlay pavement as part of the 57/Lambert Interchange Improvement project. All lanes will reopen on Monday, August 8 at 5:00 a.m.

For the duration of the closure, on-ramps to the 57 Fwy will be closed and Lambert Rd will be fully closed, from St College Blvd to Pointe Dr. The Southbound and Northbound freeway off-ramps will be closed only when setting up the closures and removing the closures. Expect heavy delays and alternate routes are highly encouraged. The main detour routes are Kraemer Blvd, Associated Rd, State College Blvd, Brea Blvd, Imperial Hwy., and Brea Canyon Rd. Please share this information with your neighbors.

For more information, please call (657) 328-6000.

Please note that in order to safely handle any unforeseen issues and to keep the project on track, it may be necessary to modify the schedule or the work plan. We will make every effort to update the information as soon as it’s received. 


Keep informed by following Caltrans’ website and social media platforms: Facebook, Twitter and Instagram. Additionally, follow the City of Brea official news sources for updates. of new Caltrans information. Please allow some extra time, watch for detour information and drive carefully.