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In observance of the Thanksgiving holiday, there will be no construction activities or closures scheduled from Wednesday, Nov. 27 to Sunday, Dec. 1. Construction will resume on Monday, Dec. 2.

WHAT:

Crews will be pouring concrete to reconstruct the northbound SR-55 MacArthur Boulevard straight on-ramp, which will require an extended closure of the ramp.

WHEN:

The on-ramp is expected to close for a continuous 10-day closure, as early as 9 p.m., Monday, Dec. 9 and reopen to motorists by 5 a.m., Thursday, Dec. 19.

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

In mid-December, crews are expected to begin work to demolish the concrete barrier along both sides of the SR-55 bridge over Dyer Road to accommodate the freeway improvements. This night work will require local street closures on Dyer Road underneath the freeway, as well as lane and ramp closures on northbound and southbound SR-55 at Dyer. Additional information regarding this activity will be provided in upcoming communications.

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.