featured graphic for I-405 Improvement Project

Reminder: Northbound I-405 on-ramp from Warner Avenue to close for one month

For more information about this project, please contact the 405 Community Outreach Team at [email protected] or 888-400-8994, or visit octa.net/405improvement.

To view and print a detailed list of closures and detours CLICK HERE!

Click to see closures and detours on the interactive map.

REMINDER! Northbound I-405 On-Ramp from Warner Avenue to Close for Approximately One Month

Crews will close the NB I-405 on-ramp from Warner for approximately one month to accommodate the freeway widening. Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and asphalt paving.

The ramp is set to close as early as 10 TONIGHT Tuesday, Sept. 15.

The northbound I-405 on-ramp from Magnolia Street is scheduled to close 10 p.m. Thursday, Sept. 17, for approximately one month.

The duration of this work may change depending on site conditions. Please be advised that this work may be loud. Dates and times are subject to change due to unforeseen operational factors or inclement weather.

This article was released by the Orange County Transportation Authority.