March 18–25, 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.

Reaching for the Cure Run

Due to a special event Sunday, March 22, the following road closures will be in place from
6 to 11 a.m.

• Irvine Valley at Jeffrey Road — full closure in both directions
• Valley Oak from Irvine Center Drive to south of Barranca Parkway
  • Closed to northbound traffic at Alevera
• Barranca from Jeffrey Road to Sand Canyon Avenue
• Sand Canyon Avenue at Barranca will have limited movements for southbound and westbound traffic, and will be closed off for eastbound and northbound traffic
• Sand Canyon Avenue closed to northbound traffic at Hoag entrance
• Laguna Canyon Road closed between Barranca and Alton

For more details, visit the Pediatric Cancer Research Foundation's Reaching for the Cure website.

Help Improve the Venta Spur Trail

The City is working to improve safety and accessibility along the 3.7 mile Venta Spur Trail, and is seeking community input.

The Venta Spur Trail Crossings Improvement project will review street crossings along the trail that do not currently have traffic signals. Join City staff Wednesday, March 25, from 6 to 8 p.m. at Northwood Community Center to learn about the improvement project, ask questions, and connect with the project team. A brief survey is also available for community members to share their input. 

To take the survey and learn more, visit cityofirvine.org/transportationstudies.

Jeffrey Open Space Trail Extension Impacts Jeffrey Road

Work has begun on the Jeffrey Open Space Trail (JOST) extension, which will run between Barranca Parkway and Walnut Avenue, connecting to the Jeffrey Open Space Trail Bicycle & Pedestrian Bridge being built over the I-5 Freeway and Walnut Avenue. 

This phase of the project requires lane closures northbound on Jeffrey Road from Walnut Avenue to Smoketree weekdays from 7 a.m. to 5 p.m.

Access to area residences and businesses will be maintained. Detour signage will be in place to direct motorists and pedestrians.

The bridge project and trail extension are anticipated to be completed this summer. Learn more about the JOST Bridge.

Orchard Hills Neighborhood Street Rehabilitation

As part of the Street Rehabilitation Program, the City is performing pavement rehabilitation on Culver Drive and Forge in the Orchard Hills neighborhood. The project also includes installing a Class IV Protected Bike Lane on Culver Drive and Orchard Hills Drive.

Phase 1 has begun, and will continue through April. This phase includes grinding and paving of Culver Drive and Forge. Work will occur weekdays from 7 a.m. to 5 p.m.

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.

Jamboree Road and Main Street Intersection Enhancements

The Jamboree Road and Main Street intersection project is underway with work occurring weekdays from 7 a.m. to 5 p.m. and lane closures in place from 9 a.m. to 3 p.m.

The project, which will continue through August 2026, includes modifications to the alignment and medians at the intersection to enhance traffic flow approaching the I-405 Freeway. It also includes modifying the traffic signal system, providing Class II bike lanes, and adjusting drainage facilities.

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 Street Rehabilitation

Sidewalk, curb ramp, and miscellaneous concrete and accessibility improvements are underway on both arterial and local streets throughout the Woodbury neighborhoods as part of the Street Rehabilitation Program. 

Work occurs weekdays from 8 a.m. to 4 p.m. on residential streets and 9 a.m. to 3 p.m. on arterial streets through May.

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 complete 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.

Marine Way Project

The City of Irvine is advancing the Marine Way extension and undercrossing to improve access and traffic circulation in and around the Great Park. While Marine Way runs along the southern edge of the park, there is currently no direct rail crossing or direct road access into the Great Park from Marine Way and Barranca, where Marine Way currently ends.

The project will create a new rail undercrossing at Marine Way, providing a direct connection between the Great Park and the Spectrum area for vehicles, pedestrians, and cyclists.

Learn more about the project and view our FAQs at cityofirvine.org/marineway.

Dyer Road On-Ramp Extended Closure

Orange County Transportation Authority crews will be reconstructing the northbound State Route 55 (SR-55) Dyer Road straight on-ramp, which will require an extended closure of the on-ramp through Friday, March 20, at 5 a.m. The northbound SR-55 Dyer loop on-ramp will remain open during this time.

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

I-5 Freeway Improvement Project Ramp Closures

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.

Crews continue to implement temporary striping and place K-rail along the northbound and southbound I-5 Freeway, which requires the following ramp and lane closures:

• Thursday, March 19, 10 p.m. to Friday, March 20, 5 a.m.
  Northbound I-5 outside lane between Jamboree Road and Tustin Ranch Road
  Northbound I-5 Tustin Ranch Road off-ramp
  
  
• Friday, March 20, 10 p.m. to Saturday, March 21, 5 a.m.
  Northbound and southbound I-5 Tustin Ranch Road on-ramps

To sign up for project updates, visit octa.net/I-5Project.

State Route 73 Closures

The northbound State Route 73 Bison Avenue on-ramp will be fully closed through Thursday, March 19, from 10 p.m. to 5 a.m.

View detours as well as other work impacting The Toll Roads.

State Route 241 Lane Reduction

Lanes will be reduced on the southbound State Route 241 between Tomato Springs Toll Plaza and Alton Parkway through Friday, March 20, from 9 a.m. to 6 p.m. and from 9 p.m. to 9 a.m. Two lanes will remain open to traffic.

View detours as well as other work impacting The Toll Roads.

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.