CONSTRUCTION UPDATE

Week of July 7, 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 and ramp closures are anticipated Tuesday night, July 8, through Friday night, July 11, from 9 p.m. to 5 a.m.*



*Construction schedule is subject to change.

Crews are conducting curb and ramp work, overhang demolition, and electrical activities 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:

  • NB I-405 between I-5 and Sand Canyon Avenue
  • SB I-405 between Jeffrey Road and I-5


Intermittent Ramp Closures*:

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



Intermittent Connector Closures:

  • NB I-405 Connector to SB SR-133
  • NB SR-133 Connector to SB I-405
  • SB I-405 Connector to NB SR-133
  • SB SR-133 Connector to NB I-405
  • SB SR-133 Connector to SB I-405



* Consecutive ramps will not be closed at the same time.
 
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Caltrans District 12 | 1750 E 4th Street #100 | Santa Ana, CA 92705 US

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