July 1–8, 2026

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.

Traffic Signal Shutdown at Barranca Parkway and Santa Rosa

The traffic signal at Barranca Parkway and Santa Rosa will be turned off or placed in red flash mode Wednesday, July 1, from 9 p.m. to 3 a.m.

Every effort will be made to keep traffic flowing and minimize disruptions, but delays should be expected, and motorists should consider using alternate routes when possible.

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

Orchard Hills Neighborhood Street Rehabilitation

As part of the Street Rehabilitation Program, the City is performing pavement rehabilitation on residential streets in the Orchard Hills Neighborhood. The project includes: 

• Pavement rehabilitation on Culver Drive and Forge, north of Portola Parkway
• Slurry seal on Orchard Hills Drive
• The addition of a Class IV Protected Bike Lane on Culver Drive and Orchard Hills Drive

This project also includes utility coordination with the Irvine Ranch Water District.

Work occurs Monday though Friday from 7 a.m. to 5 p.m. and will continue through August.

Access to businesses and private streets/communities will be maintained during the project, however, access to streets and driveways may be temporarily restricted while work is underway. Neighborhood parking may also be limited during construction activities; vehicles must be parked outside the posted work areas until construction is complete and signage is removed. 

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

Harvard Avenue & Michelson Drive Intersection Improvements

One eastbound and westbound lane on Michelson Drive at Harvard Avenue is closed as work continues on the Harvard Avenue and Michelson Drive Intersection Improvements project. 

Phase 3 is underway and will continue through September. Work occurs Monday through Friday from 9 a.m. to 3:30 p.m.

This intersection widening project will enhance traffic flow through the intersection and improve signal timing coordination along the Harvard Avenue and Michelson Drive corridors.

The City is removing and replacing asphalt pavement, curb and gutter, curb ramps, and sidewalk, as well as modifying traffic signal equipment behind temporary traffic control delineators and permanent K-rail lane closures. The project is anticipated to be completed this fall.

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

Jamboree Road and Main Street Intersection Enhancements

The Jamboree Road and Main Street intersection project is underway with work occurring weekdays from 9 a.m. to 3 p.m.

The project, which will continue through winter, will widen and enhance the intersection and reduce traffic congestion on Jamboree Road and Main Street. Specific improvements include lengthening left turn lanes, removing islands at southwest and southeast corners, modifying the traffic signal system, implementing drainage, water quality, and street lighting upgrades, and installing Class II bike lanes. 

Every effort will be made to keep traffic flowing and minimize disruptions, but delays should be expected. Please consider using alternate routes.

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

Woodbury Neighborhood Improvements

The Pavement Rehabilitation and Slurry Seal project is aimed at improving streets and sidewalks in the Woodbury neighborhood. Work occurs weekdays from 8 a.m. to 5 p.m. through August 21. View the construction notice and map.

Access to streets and driveways may be temporarily restricted while work is underway. Parking within the neighborhood may also be limited during construction activities; vehicles must be parked outside the posted work areas until construction is completed and signage is removed. Access to businesses and private streets or communities will be maintained throughout the project.

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

I-5 Improvement Project Construction Impacts

The Orange County Transportation Authority, in partnership with Caltrans, is improving the I-5 Freeway between the I-405 Freeway and State Route 55 to reduce congestion, enhance safety, and improve travel.

Construction activities are expected to take place along the northbound I-5 Culver Drive on-ramp area for the construction of a new retaining wall in late June, continuing through late 2026.

Daytime work will occur from 7 a.m. to 4 p.m. behind concrete barriers. Nighttime work will occur from 10 p.m. to 5 a.m. and will require freeway lane closures and intermittent closures of ramps including the northbound I-5 Culver Drive on-ramp.  

In observance of the Independence Day holiday, there will be no work or closures Friday, July 3, through the morning of Monday, July 6.

For a full list of anticipated weekly closures and detours, and the most up-to-date project information, visit octa.net/I-5Project.

Revive the 405 Project Activities

The California Department of Transportation is making improvements to Interstate 405, between Interstate 5 and Harbor Boulevard. Crews are conducting curb and ramp work, paving, and electrical activities at night on northbound and southbound I-405. These activities require nightly intermittent lane, ramp, and connector closures.

In observance of Independence Day, there will be no roadway closures from Friday night, July 3, through the afternoon of Monday, July 6. Normal construction activities and roadway closures will resume Monday night, July 6.

This work is part of the Caltrans Revive the 405 Improvement Project. Please visit ReviveThe405.com for more information.

Learn about additional projects 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.