Planned Construction Activity

Visit the Planned Lane Closures interactive website.

Beginning November 4, Caltrans will reduce the westbound Lambert Rd. left turn lanes onto the southbound 57 freeway on ramp to one left turn lane. Also, the southbound 57/Lambert on ramp will be reduced to one lane.

Upcoming Caltrans Closures/Activities for January 18 and 20

Residents and businesses in the vicinity of Lambert Road and the 57 Freeway may notice vibrations and increased construction noise during daytime hours on Saturday, January 18 and Monday, January 20. The construction work includes driving approximately 120 concrete/steel pilings into the ground to construct the abutment for a new bridge overpass. For the latest updates on the 57/Lambert Interchange Improvement Project, please visit

All existing long-term closures and detours will remain in effect.

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.