I-405 (I-5 to SR-55)

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  • I-405 (SR-55 to I-5)

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    The Environmental Review Process

    The I-405 (SR-55 to I-5) Improvement Project is currently in the Project Approval and Environmental Document (PA/ED) Phase, commonly referred to as the environmental review process. As mandated by the California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA), an Initial Study and Environmental Assessment (IS/EA) environmental document will be prepared.

    At the heart of CEQA and NEPA is the public’s interest in the environment. In general, the purpose of the environmental review process is to identify a proposed project’s potential environmental effects and to develop measures to avoid, minimize and/or mitigate these effects.

    The IS/EA will assess a wide range of topics including, but not limited to: air quality, noise, natural environment, community impacts, visual impacts, relocation impacts, cultural resources, water quality, floodplain impacts, and paleontological resources. A Draft IS/EA comprehensively details information of each study, and will be available for public review and comment during a public review period. A public hearing will be held during the public review period at a public facility along the project corridor. 

    Project Study Report–Project Development Support 

    The Project Study Report–Project Development Support (PSR-PDS) was approved by Caltrans on December 10, 2013. The PSR-PDS is a preliminary planning document and describes the transportation problem, identifies the scope of viable alternatives, and provides an estimate of the project development support resources required. A Preliminary Environmental Assessment Report (PEAR) was also prepared as part of the PSR-PDS. 

    No detours are anticipated to take place during the environmental review process.
    Overview
    Details

    The Environmental Review Process

    The I-405 (SR-55 to I-5) Improvement Project is currently in the Project Approval and Environmental Document (PA/ED) Phase, commonly referred to as the environmental review process. As mandated by the California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA), an Initial Study and Environmental Assessment (IS/EA) environmental document will be prepared.

    At the heart of CEQA and NEPA is the public’s interest in the environment. In general, the purpose of the environmental review process is to identify a proposed project’s potential environmental effects and to develop measures to avoid, minimize and/or mitigate these effects.

    The IS/EA will assess a wide range of topics including, but not limited to: air quality, noise, natural environment, community impacts, visual impacts, relocation impacts, cultural resources, water quality, floodplain impacts, and paleontological resources. A Draft IS/EA comprehensively details information of each study, and will be available for public review and comment during a public review period. A public hearing will be held during the public review period at a public facility along the project corridor. 

    Project Study Report–Project Development Support 

    The Project Study Report–Project Development Support (PSR-PDS) was approved by Caltrans on December 10, 2013. The PSR-PDS is a preliminary planning document and describes the transportation problem, identifies the scope of viable alternatives, and provides an estimate of the project development support resources required. A Preliminary Environmental Assessment Report (PEAR) was also prepared as part of the PSR-PDS. 

    Detours
    No detours are anticipated to take place during the environmental review process.
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  • Caltrans and OCTA Seek Public Comments

    Caltrans and OCTA are proposing improvements to the I-405 between I-5 and SR-55 to address freeway congestion and make travel more efficient. Currently in the Project Approval/Environmental Document (PA/ED) phase, commonly referred to as the environmental study phase, OCTA and Caltrans are studying the potential benefits and effects of adding one or two general purpose lanes in each direction, adding auxiliary lanes and making various operational improvements. The environmental study phase kicked-off in early 2015 and is anticipated to be complete in mid-2018.

    Studies indicate the proposed project will not significantly affect the quality of the environment.

    A draft environmental document has been prepared that evaluates the project’s potential benefits and effects, and we’d like your input. This document is available for public review and comments between November 14 and December 15, 2017.


    Public Hearing (Open House Format) on December 5, 2017:

    Join Caltrans and OCTA at the upcoming public hearing (open house format) to learn about the proposed project improvements, meet the project team, ask questions, and submit comments.

    Tuesday Dec. 5, 2017 | 5 – 8 p.m.
    University Community Park
    Multipurpose Room 2
    1 Beech Tree Lane, Irvine, CA 92612
     

    Deadline to Comment is December 15, 2017:

    Your comments are very important in the decision making process. Comments received will be included and responded to in the proposed final environmental document. There are three ways to comment:

    • SUBMIT at the public hearing (open house) on December 5, 2017
    • EMAIL D12.405-South-Improvement-Project@dot.ca.gov  
    • MAIL to Scott Shelley, Caltrans District 12, Division of Environmental Analysis, 1750 E 4th Street, Suite 100, Santa Ana, CA 92705

    About the Project Area

    Interstate 405 between I-5 and SR-55 plays a central role in progressing Orange County’s mobility, economy and quality of life. This section of I-405 provides direct and indirect access to residential communities, employment centers, cultural and recreational facilities, John Wayne Airport, and some of the region’s top medical and academic institutions.

    This 8.5 mile segment of I-405 is one of the busiest stretches of freeway in the nation, as well as one of the most congested. Today, between 250,000 and 310,000 cars travel this segment every day and by 2050 daily trips are expected to increase about 19%. To address current and future travel demand on this corridor, OCTA and Caltrans District 12 are studying the I-405 South Improvement Project.


    Proposed Improvements

    Three alternatives are currently under consideration, one No Build Alternative and two Build Alternatives. The No Build Alternative includes no improvements from the proposed project but assumes completion of other programmed improvements in the study area that are currently underway by Caltrans. The Build Alternatives would increase capacity and ease merging operations by adding one or two general purpose lanes in the northbound and southbound directions. Both Build Alternatives also propose the realignment of ramps, changing the existing limited carpool lane access to continuous access, as well as numerous operational improvements.

    Measure M: Promises Made, Promises Kept

    The environmental phase of the I-405 South Improvement Project is funded by Measure M, a half-cent sales tax to fund transportation investments approved by over 70% of Orange County voters. The estimated cost of construction is between $110 and $250 million, depending on the alternative concept approved.

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Public Participation and Community Engagement

At the heart of CEQA and NEPA is the public’s interest. And at the center of Measure M is a commitment to the taxpayer. 

Consistent with these public policy values, OCTA and Caltrans are implementing a public information and community engagement program that not only complies with, but exceeds public information mandates under CEQA and NEPA.

Throughout the environmental review process, OCTA and Caltrans will sustain a multimedia public communications and community engagement program intended to generate project awareness, and promote and facilitate public participation and comment.

In addition to the project webpage, the communications and engagement program will include:

  • Telephone helpline
  • Noticing and canvassing
  • Public information meetings
  • Elected official briefings
  • Community presentations
  • Social media alerts and updates
  • Open House
  • Constituent services

Stay Connected

The environmental review period is an excellent opportunity to ask questions or provide your input about the proposed project. The I-405 South Improvement Project has designated project outreach staff who will help guide you through the process.
To stay connected with milestone updates or receive invitations to community meetings, please sign up for our email distribution list.

 

Speakers Bureau

Civic and business organizations are invited to contact the project team to schedule a presentation about the proposed improvements, environmental studies, or transportation issues and activities countywide. For questions, please contact Fernando Chavarria, Manager of Community Outreach, or Andrea Hammann, Community Relations Specialist.

Public Information Meeting: Nov. 3, 2015

To kick-off the public participation process, a Public Information Meeting was held on Tuesday, November 3, 2015 at University Community Park in Irvine. Members of the public were invited to join us at the meeting to learn about the project, meet the project development team, and most importantly, share comments. Details of the meeting are displayed below:

Tuesday, November 3
5:00 – 8:00 PM
University Community park
Multipurpose Room #2
1 Beech Tree Lane
Irvine, CA 92612

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