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Crews are expected to perform striping activities, which will require closing eastbound and westbound Edinger Avenue underneath the freeway from 9 p.m. to 5 a.m. on Monday, June 15 and Thursday, June 18.

The southbound McFadden Avenue on- and off-ramps are open following extended closures to reconstruct each ramp! We thank and appreciate the public for allowing crews to complete the work safely and keep the project moving forward.

Construction crews have reached a major milestone on the retaining wall along northbound SR-55 near the McFadden Avenue off-ramp. Once complete, the wall will stand approximately 30 feet tall and extend 900 feet in length. Recently, crews backfilled the wall with 10,000 cubic yards of styrofoam blocks, the largest use of this material for a retaining wall in California.

Due to the wall's location, crews used the lightweight styrofoam blocks instead of traditional soil to help reduce weight and pressure for the surrounding areas. This effort required tremendous planning and coordination between construction crews, contractors, and construction management teams over the course of approximately two months.

Bookmark the closures and detours map for quick access to real-time construction information. Click on the construction icons to view activities and closures.

OCTA, in cooperation with Caltrans, is improving 4 miles of SR-55 between I-405 and I-5. The project will improve traffic flow and reduce travel time by adding one regular lane and one carpool lane in each direction. Also, the project will add merge lanes between several interchanges and stripe carpool lanes for continuous access, augmenting safety on the freeway by making merging easier. These enhancements are expected to create a better, smoother driving experience for motorists.