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Crews are expected to continue pavement work along the outside lane of northbound

SR-55 between the northbound Dyer Road off-ramp and Dyer Road bridge. This work will require an extended closure of the outside lane and northbound Dyer Road loop on-ramp from 9 p.m., Friday, April 25 to 5 a.m., Monday, April 28.

On Earth Day, Tuesday, April 22, take advantage of free bus rides offered by OCTA. Riding OC Bus is a safe and easy way to get to popular destinations around Orange County. 

OC Bus fleet runs on clean, renewable energy and is headed toward a 100 percent zero-emission future to bring even cleaner air quality to Orange County.

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.