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In observance of Memorial Day, no closures are scheduled from Friday, May 23 to Monday, May 26. Construction activities will resume on Tuesday, May 27.

To accommodate upcoming pile driving operations in the median, crews are expected to temporarily close the outside left-turn lane on eastbound Dyer Road and the inside

left-turn lane on southbound Grand Avenue. These closures will begin as soon as Tuesday, May 27 and continue for approximately two weeks.

WHAT: 

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

WHEN: 

The on-ramp is expected to close as early as 9 p.m., Tuesday, June 3 and reopen to motorists by 5 a.m., Friday, June 13.  

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.

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.