October 15–22, 2025

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 Irvine Center Drive Off-Ramp

A full weekend closure of the southbound I-405 Irvine Center Drive off-ramp is scheduled for Friday, October 17, at 10 p.m. through Monday, October 20, at 5 a.m. for crews to safely perform striping, paving, and drainage work 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.

 JOST Bridge Construction Impacts to the I-5 Freeway

The following nighttime closures for the I-5 Freeway are taking place through Friday, October 17:

• Northbound I-5 Freeway Jeffrey Road off-ramp and Sand Canyon Avenue off-ramp closures.
• Southbound State Route 133 (SR-133) to northbound I-5 Freeway connector closure.

All work will occur from 9 p.m. to 7 a.m.

The closures will allow crews to complete the removal of falsework steel beams and plywood forms over the I-5 Freeway for the Jeffrey Open Space Trail (JOST) Bicycle and Pedestrian Bridge project.

Learn more about the JOST Bridge project.

Street Rehabilitation & Slurry Seal in the Woodbridge Neighborhoods

The City is performing slurry seal operations along West and East Yale Loop, Yale Avenue, and Warner Avenue in the Woodbridge neighborhood. The project will include the application of slurry seal as well as utility adjustment work on behalf of the Irvine Ranch Water District. This work involves resetting manhole and water valve covers to grade on the newly repaved streets.

Work is underway from 9 a.m. and 3 p.m. and will be complete Thursday, October 16. The dates below reflect the most current construction information, but are subject to change.

• East Yale Loop (Yale Avenue to Barranca Parkway): October 15–16
• Warner Avenue: October 15–16
• Yale Avenue: October 15–16

Every effort will be made to complete this essential work quickly to minimize inconvenience to the community.

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

Harvard Avenue & Michelson Drive
Intersection Improvements

The City has begun removing and replacing asphalt pavement, curb and gutter, curb ramps, and sidewalk, and modifying traffic signal equipment at the intersection of Harvard Avenue and Michelson Drive.

Work will continue Monday through Friday from 7 a.m. to 3:30 p.m. through May 2026 behind temporary traffic control delineators and permanent K-rail lane closures.

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 project is anticipated to be complete in fall 2026.

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

State Route 55 Dyer Road Loop On-Ramp 30-Day Closure

Orange County Transportation Authority crews will be reconstructing the northbound State Route 55 Dyer Road loop on-ramp, which will require an extended closure of the on-ramp Monday, October 27, at 9 p.m. through Wednesday, November 26, 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. 

State Route 73 Closures

The northbound State Route (SR) 73 Bison Avenue on-ramp will be closed nightly from 9 p.m. to 5 a.m. through Friday, October 17. It will also close Friday, October 17, at 9 p.m., opening Saturday, October 18, at 7 a.m.

The northbound SR-73 Bonita Canyon Drive on-ramp will be closed through Thursday, October 16, from 10 p.m. to 5 a.m.

The southbound SR-73 Newport Coast Drive on-ramp will be closed Wednesday, October 15, from 10 p.m. to 6 a.m.

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

State Route 133 Closure

The southbound State Route 133 (SR-133) connector to northbound I-5 will be fully closed through Thursday, October 16, from 11 p.m. to 5 a.m. and Friday, October 17, from 11 p.m. to 7 a.m.

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

State Route 241 Closure

Northbound State Route 241 between State Route 133 and State Route 261 will be closed through Friday, October 17, from 9 p.m. to 6 a.m. and Saturday, October 18, from 11 p.m. to 6 a.m.

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.