April 15–22, 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.

Full Weekend Closure I-405 Sand Canyon Off-Ramp

The southbound I-405 Freeway Sand Canyon off-ramp will be closed from Friday, April 17, at 10 p.m. through Monday, April 20, at 5 a.m., to allow crews to safely complete concrete work and paving at the off-ramp.

Detour routes will be posted to help motorists navigate through the area during the closure. Please follow all temporary construction signage and reduce traveling speed through the construction zone.

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

College Park and Colony Park Neighborhood Street Rehabilitation

As part of the Street Rehabilitation Program, the City is performing pavement rehabilitation on local and residential streets in the College Park and Colony Park neighborhoods.

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 June. 

Every effort will be made to complete the project efficiently and minimize disruption to the community. Please note that access to streets and driveways may be temporarily restricted while work is underway. Parking within the neighborhoods 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.

Jeffrey Open Space Trail Extension Impacts Jeffrey Road

Work is underway on the first phase of the Jeffrey Open Space Trail (JOST) extension between Smoketree and Walnut Avenue. This phase of the project requires lane closures northbound on Jeffrey Road weekdays from 7 a.m. to 5 p.m.

Access to area residences and businesses is being maintained, and detour signage is in place to direct motorists and pedestrians.

The JOST extension will connect to the Jeffrey Open Space Trail Bicycle & Pedestrian Bridge being built over the I-5 Freeway and Walnut Avenue. The bridge project and trail extension are anticipated to be completed this summer. Learn more about the JOST Bridge.

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 Street Rehabilitation

Sidewalk, curb ramp, and miscellaneous concrete and accessibility improvements are underway on both arterial and local streets throughout the Woodbury neighborhood 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 June.

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 Extension and Undercrossing Project

Bar reinforcing steel continues to be placed on exterior and interior walls for the Marine Way box this week. Crews will be setting up the bore machine and welding steel pipe for the upcoming horizontal direction drilling operation to relocate the 16” diameter oil line below the new grade separation boxes.

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

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:

• Wednesday, April 15, 10 p.m. to Thursday, April 16, 5 a.m.
  Northbound I-5: Jamboree Road on- and off-ramps
  Northbound I-5: Two outside lanes between Culver Drive and Jamboree Road
  Southbound I-5: Jamboree Road on-ramps
  Southbound I-5: Two outside lanes between Jamboree Road and Culver Drive
  
  
• Thursday, April 16, 10 p.m. to Friday, April 17, 5 a.m.
  Northbound I-5: Culver Drive on-ramps
  Northbound I-5: Tustin Ranch Road on-ramp
  Northbound I-5: Two outside lanes between Culver Drive and Jamboree Road
  Southbound I-5: Culver Drive on-ramps
  Southbound I-5: Jamboree Road on-ramp
  Southbound I-5: Two outside lanes between Jamboree Road and Culver Drive
  
  
• Friday, April 17, 10 p.m. to Saturday, April 18, 5 a.m.
  Northbound I-5: Culver Drive on-ramps
  Northbound I-5: Two outside lanes between Culver Drive and Jamboree Road
  Southbound I-5: Jamboree Road on-ramps
  Southbound I-5: Two outside lanes between Jamboree Road and Culver Drive

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

State Route 55 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 ramp beginning at 9 p.m., Tuesday, April 21. The on-ramp will reopen to motorists by 5 a.m., Friday, May 1. In addition, the northbound SR-55 outside lane is expected to close at 9 p.m., Friday, April 24, and reopen by 5 a.m., Monday, April 27.

Detour signs will be posted in advance. Motorists are encouraged to plan ahead before traveling through the area. View freeway detours.

State Route 133 Closures

The following nightly closures in Irvine will continue on State Route 73 through Thursday, April 16, from 11:59 p.m. to 5 a.m.

• Northbound State Route 133 connector to southbound I-405
• Southbound State Route 133 connector to northbound I-405
• Southbound State Route 133 connector to southbound I-405

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.