CONSTRUCTION UPDATE

Week of March 31, 2025

Project Overview

The California Department of Transportation (Caltrans) is making improvements to Interstate 405 (I-405), between Interstate 5 (I-5) and Harbor Boulevard. The project will improve safety for all modes of travel, increase the life expectancy of pavement, enhance traffic operations, and mitigate congestion.

Project Improvements

Enhance safety for traveling public and maintenance crews.

Repair and replace concrete slabs, lanes, traffic loop detectors, and bridge rehabilitation

Traffic management system improvements, including ramp and roadway enhancements, and an updated metering system.

Irrigation and landscape enhancements.

NEW! Park and Ride facility located on Bristol Street at SB I-405.

Contact Us

Email:

Info@revivethe405.com

Helpline:

714-868-6998

Website:

www.ReviveThe405.com

Nightly lane, ramp, and connector closures are anticipated Monday night, March 31, through Friday night, April 4, from 9 p.m. to 5 a.m.*

* Construction schedule is subject to change.

Crews are conducting roadway, electrical, concrete, and curb/gutter work at night on northbound (NB) and southbound (SB) I-405 and on freeway ramps. This activity requires intermittent lane, ramp and connector closures at night.

Please be advised that this work may be loud. Follow detour signs in place to navigate around closures.

Intermittent Freeway Lane Closures on:

NB I-405 between I-5 and MacArthur Boulevard
SB I-405 between University Drive/Jeffrey Road and I-5

Intermittent Ramp Closures*

NB I-405 on-ramp from WB Sand Canyon Avenue
SB I-405 loop on-ramp from WB Irvine Center Drive
SB I-405 loop on-ramp from WB Sand Canyon Avenue
SB I-405 off-ramp to University Drive/Jeffrey Road
SB I-405 loop on-ramp from WB University Drive/Jeffrey Road
SB I-405 on-ramp from EB University Drive

Intermittent Connector Closures

NB I-405 Connector to NB I-5

* Consecutive ramps will not be closed at the same time.

CONSTRUCTION ﻿UPDATE

Contact Us

CONSTRUCTION UPDATE