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Retaining walls are an important structural component to freeway improvement projects. There are 18 retaining walls of varying sizes being constructed along the corridor with seven already completed.

At this time, crews are focusing on one of the largest retaining walls along northbound SR-55, near Edinger and McFadden Avenue. This wall is approximately 900’ long and 30’ tall. Crews are scheduled to perform weekly concrete pours through mid-August.

Along southbound SR-55, crews are also constructing a new retaining wall along the MacArthur Boulevard

on-ramp to accommodate the freeway improvements. Contractors have removed a majority of the old retaining wall and have successfully poured the foundation for the new wall. Following this activity, crews will continue to form and pour the wall itself through August.

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Through the month of August, contractors are expected to continue removing the existing drainage box along southbound SR-55 near Ritchey Street. This work is ongoing weekdays, Monday through Friday from 6 a.m. to 5 p.m.

The Santa Ana Police Department is hosting National Night Out on Tuesday, Aug. 6 from 4 to 6 p.m. at Cabrillo Park!

Stop by the SR-55 Improvement Project booth to learn about construction activities, sign up for project alerts, and pick up one of our project-branded freebies!

Click here for more information.

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.