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Contractors are expected to remove temporary shoring at the retaining wall along the northbound MacArthur Boulevard off-ramp. The northbound MacArthur off-ramp is expected to be closed weeknights from 9 p.m. to 5 a.m., during the weeks of Aug. 7 and Aug. 21.  

WHAT:

Crews are expected to install railing on the overhang along the east side of the SR-55 bridge over MacArthur Boulevard as part of the bridge reconstruction.  

This work will require directional closures of MacArthur under the freeway as well as the northbound and southbound loop on-ramps. The off-ramps and the straight on-ramps will remain open.

WHEN:

Eastbound MacArthur will be closed from 9 p.m. to 5 a.m. nightly, beginning as early as Tuesday, Aug. 8 to Thursday, Aug. 10.

Westbound MacArthur will be closed from 9 p.m. to 5 a.m. nightly, beginning as early as Friday, Aug. 11 to Tuesday, Aug. 15, excluding weekends.

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

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

This week's Focus on 55 business spotlight is Sterling Collision Center. With over 30 years of experience, this luxury collision repair shop has 68,000 square feet of space available and the latest technology to repair today’s modern vehicles.

1111 Bell Ave., Tustin, CA 92780

714-259-1111

www.sterlingcollisioncenter.com

To learn more about OCTA's Focus on 55 Program, including official rules and eligibility, visit octa.net/Focuson55 or click here to enroll your business today.

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.