May 21–28, 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.

Suggested Routes to School Virtual Public Workshop

The City is gathering feedback to better understand the community’s transportation needs in and around all 45 public schools in Irvine. Share your input at a Virtual Public Workshop today, May 21, at 5 p.m. 

View our flier and register for the virtual workshop.  Additional information is available at cityofirvine.org/sharestheway. 

Traffic Signal Shutdown at Culver Drive and Alton Parkway

The traffic signals at the intersection of Culver Drive and Alton Parkway will be turned off Thursday, May 29, between 9 a.m. and 3 p.m. for traffic signal work.

Every effort will be made to keep traffic flowing and minimize disruptions; however, significant delays are expected. Please consider using alternate routes. 

This work is part of the Culver/Alton Intersection Improvement Project, which will enhance traffic
flow through the intersection and improve signal timing coordination along the Culver Drive and Alton Parkway corridors.

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

SR-55 Improvement Project
Dyer Road Closure

Orange County Transportation Authority crews will shift traffic toward the outside lane of Dyer Road to accommodate pile driving activities in the median. This work will require a closure under State Route 55 (SR-55) in both directions of Dyer Road Wednesday, May 21, from 9 a.m. through Tuesday, May 22, at 5 a.m.

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

Ramp Closures: State Route 133

The Barranca Parkway off-ramp from southbound State Route 133 (SR-133) will be closed through Wednesday, May 21, from 9 a.m. to 2 p.m.

DETOUR: Continue southbound on the SR-133 and keep right to take the connector to northbound I-405. Exit on Sand Canyon Avenue and turn right. Continue straight to reach Barranca Parkway.

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.