August 12–19, 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.

Bridge Work Impacts Walnut Avenue and I-5 Freeway

The City will install truss railings on the Jeffrey Open Space Trail Bicycle & Pedestrian Bridge, requiring a temporary full closure of Walnut Avenue south of Jeffrey Road and the southbound
I-5 Freeway on- and off- ramps at Jeffrey Road. There will also be no access to the Caltrans Park
& Ride.

The bridge opened to the public Tuesday, August 11. Learn more about the opening.

Daisy Chain Fields Music Festival Information for
Great Park Neighborhood Residents

Daisy Chain Fields, a new music festival founded by Olivia Rodrigo and produced by C3 Presents, will debut at the Great Park August 29, from 10:30 a.m. to 10 p.m. 

In the days leading up to the festival, there will be setup activity, including temporary structures, staging, fencing, equipment deliveries, and increased staff presence throughout portions of the Great Park. Festival setup will begin August 23, and event breakdown will begin immediately following the event’s conclusion and last through the end of the day September 2.

Dash Passes for Resident Access
Lane and street closures will take place throughout the festival. Dash Passes for local access are available for residents who need to navigate the Resident Access Only streets August 29. A Dash Pass is a rearview mirror hanging tag or placard placed on the dashboard. Dash Passes do not provide parking on Resident Access Only streets; they only grant access past the traffic barricades. Dash Passes may be obtained from the Daisy Chain Fields Box Office during Dash Pass Distribution hours with required documentation.

Please note that the Great Park will be closed Thursday, August 27, to Sunday, August 30.

Please visit the Daisy Chain Fields website for related information. For general feedback or support, please email neighborhood@daisychainfields.com.

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 through 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 one westbound lane on Michelson Drive at Harvard Avenue are 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, as well as 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.

State Route 55 Dyer Road Lane Closures

Orange County Transportation Authority crews will be striping eastbound Dyer Road underneath State Route 55, which will require lane closures Friday, August 14, at 9 p.m. to Saturday, August 15, at 5 a.m.

This work is part of the Orange County Transportation Authority's State Route 55 Improvement Project. Please visit octa.net/55Construction for more information. 

I-5 Improvement Project Construction Impacts

The Orange County Transportation Authority (OCTA) is improving the I-5 Freeway from north of I-405 Freeway to State Route 55.

As part of the I-5 Improvement Project, nighttime activities are expected to start for the removal of overhead signage on northbound I-5. This work requires a full closure of NB I-5 between Alton Parkway and State Route 133. Additionally, the southbound I-5 carpool lane adjacent to the median will also be closed. Work is anticipated to begin in August.

In addition, intermittent nighttime full closures and daytime lane closures on Culver at the I-5 will occur during pile driving activity to support I-5 widening work. Crews will install concrete barriers and close inside lanes on Culver at the I-5 bridge in both directions for a long-term closure to be scheduled this fall. 

Daytime construction activities are also ongoing for the outer portions of the I-5 bridge at the Peters Canyon Hiking and Riding Trail. Intermittent full closures of the Peters Canyon Hiking and Riding Trail at I-5 may occur through late 2026.

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

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.