May 13–20, 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 Harvard Avenue and San Carlo

The traffic signal at Harvard Avenue and San Carlo will be turned off or placed in red flash mode from 9 a.m. to 3 p.m. Saturday, May 16.

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.

Harvard Avenue & Michelson Drive Intersection Improvements

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

Phase 3 is underway and will continue through September. Work will occur 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 complete this fall.

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

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.

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

There are two projects aimed at improving streets and sidewalks in the Woodbury neighborhood.

Sidewalk, curb ramp, and miscellaneous concrete and accessibility improvements are underway 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. View the construction notice and map. 

In addition, pavement rehabilitation through the Slurry Seal Project occurs weekdays from 8 a.m. to
5 p.m. until August. 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 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.

Southbound State Route 55 Dyer Road Off-Ramp Extended Closure

The Orange County Transportation Authority is reconstructing the southbound State Route 55 (SR-55) Dyer Road straight off-ramp, which requires an extended closure of the off-ramp through Friday, May 22, at 9 p.m.

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.

Beginning May 13, lanes closest to the median in both directions of Jamboree Road at the I-5 bridge will be closed for bridge widening. At least one lane in each direction will be open to traffic. Work will occur from 7 a.m. to 4 p.m. and 10 p.m. to 5 a.m.

These lane closures will remain in place until late 2026. There will also be intermittent nighttime full street closures for eastbound and westbound Jamboree Road.

In addition, the following ramp and lane closures are expected:

• Wednesday, May 13, 10 p.m. to Thursday, May 14, 5 a.m.
  (Surface Street) Eastbound and westbound Jamboree Road full street closure at I-5
  Northbound I-5 Culver Drive off- ramps
  
  
• Thursday, May 14, 10 p.m. to Friday, May 15, 5 a.m.
  Northbound I-5 Tustin Ranch Road off-ramp
  
  
• Friday, May 15, 10 p.m. to Saturday, May 16, 5 a.m.
  Northbound I-5 outside lane between Jamboree Road and Tustin Ranch Road
  Northbound I-5 Tustin Ranch Road off-ramp

To sign up for project updates, 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.