Road Construction & Improvement Projects

December 11-18, 2024 

In addition to the projects listed below that may impact your commute, you can find information on work being done to enhance our City on the Capital Improvement Projects Map and the Road Construction Map.

SR-55 MacArthur Boulevard On-Ramp Closure

Crews are pouring concrete to reconstruct the northbound SR-55 MacArthur Boulevard straight on-ramp, which requires an extended closure of the ramp. The on-ramp is closed and will reopen to motorists Thursday, December 19, by 5 a.m. The schedule is subject to change due to inclement weather or unforeseen operational issues.

The work being done is part of the SR-55 (I-405 to I-5) Improvement Project. The Orange County Transportation Authority, in cooperation with Caltrans, is improving 4 miles of SR-55 between I-405 and I-5 Freeways. The project will add one regular lane and one carpool lane in each direction to help with traffic flow and improve mobility. In addition, the project will add merge lanes between several interchanges.

For more information, visit octa.net/55Construction.

Walnut Avenue Overnight Closure

Walnut Avenue, south of Jeffrey Road, will be completely closed overnight Wednesday, December 18, at 9 p.m. to Thursday, December 19, at 5 a.m. to work on the Jeffrey Open Space Trail (JOST) Bicycle and Pedestrian Bridge. 

Access to area residences and businesses will be maintained; however, there will be no access to the southbound I-5 Freeway on- and off-ramps or Caltrans Park & Ride during the overnight closure hours. 

The entire project is anticipated to be complete in March 2026.

For more information, email pm@cityofirvine.org or call the project hotline at 949-724-6676.

Woodbridge North Roadway Improvements

Pavement rehabilitation and slurry seal will be done on public arterial and residential streets in the community of Woodbridge North. The work includes concrete repairs to various curbs, gutters, sidewalks, and access ramps, as well as resetting manhole and water valve covers on repaved streets.  

The project began Monday, December 9, and will be complete this winter. Work will take place Monday through Friday from 8 a.m. to 4 p.m. on residential streets and from 9 a.m. to 3 p.m. on arterial streets.

At least 72 hours before work begins in an area, temporary “No Parking” signs will be posted where work will occur showing the dates and times parking will be restricted.

Every effort will be made to keep traffic flowing and minimize disruptions during the work; however, delays should be expected, and motorists should consider using alternate routes.

For more information, visit cityofirvine.org/streets, email pm@cityofirvine.org, or call the project hotline at 949-724-6676.

Traffic Signal Shutdown at Bryan Avenue and Marketplace

The traffic signal at the intersection of Bryan Avenue and Marketplace will be turned off or placed in red flash mode while work on the signal is underway Tuesday, December 17, from 9 a.m. to 3 p.m. 

Every effort will be made to maintain traffic flow and minimize disruptions; however, delays are expected and motorists should consider using alternate routes during construction. 

For more information, email pm@cityofirvine.org or call the project hotline at 949-724-6676.

Traffic Signal Shutdown at Campus and Berkeley

The traffic signal at the intersection of Campus and Berkeley will be turned off or placed in red flash mode Tuesday, December 17, to Friday, December 20, from 9 a.m. to 3 p.m. to replace the signal. 

Every effort will be made to maintain traffic flow and minimize disruptions; however, delays are expected and motorists should consider using alternate routes during construction. 

For more information, email pm@cityofirvine.org or call the project hotline at 949-724-6676.

Jeffrey Road and Alton Parkway Bike Lane Closure

The bike lane in the northbound direction on Jeffrey Road just south of the Alton Parkway intersection is closed Monday through Friday, from 7 a.m. to 3:30 p.m., through December.

Part of the Jeffrey Road and Alton Parkway intersection improvement project, the work includes curb, gutter, sidewalk, irrigation, and paving renovations. All work will be done behind K-rail.

The expected project completion date is May 2025. Every effort will be made to keep traffic flowing and minimize disruptions during the work; however, delays should be expected, and motorists should consider using alternate routes.

For more information, email pm@cityofirvine.org or call the project hotline at 949-724-6676.

Learn about additional projects taking place throughout our City, including project descriptions and work hours, as well as any lane closures and night and weekend work, which may occur intermittently on major arterials when permitted.