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

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  • I-5 (I-405 to SR-55) Irvine Tustin Project

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    Project Overview

    Proposed Improvements to I-5 through Irvine and Tustin

    The Interstate 5 Freeway (I-5) through the cities of Irvine and Tustin is essential to Orange County’s mobility, economy and quality of life. It is a major commuter and commercial corridor, and serves as a “bridge” that connects Orange County to Los Angeles County and San Diego County. Today, this segment of I-5 is one of the most highly traveled and congested freeway corridors in the nation. Every day, more than 350,000 motorists drive this segment of I-5 between I-405 and SR-55, to connect with major residential, commercial, educational and employment destinations.

    Environmental Study Underway

    This roadway is already at capacity and traffic projections show that nearly ½ million motorists will begin using this stretch of I-5 by 2040. To address this current and future traffic demand, OCTA and Caltrans are conducting the Project Approval/Environmental Document (PA/ED) phase for the I-5 Irvine Tustin Project. The PA/ED phase is commonly referred to as the environmental study phase, and includes preliminary engineering and environmental study. The purpose of the study is to measure the estimated benefits, feasibility and potential environmental effects of adding a new northbound (NB) and southbound (SB) general-purpose (regular) lane, as well as various other capital and operational improvements to I-5 adjacent to the cities of Irvine and Tustin.

    Schedule and Funding

    The environmental study phase is funded by OC Go, formerly Measure M, Orange County’s voter-approved Transportation Investment Plan. This study begin in late 2014 and is anticipated to be completed by late 2018.

    The Project Purpose and Need

    Currently, the I-5 corridor within the project limits is experiencing congestion and long traffic delays due to travel demand exceeding roadway capacity. The purpose of the project is to address existing and future traffic demand and congestion, and enhance freeway operations from I-405 to SR-55 as follows:

    • Increase the freeway capacity within the project limits with one additional lane in each direction 
    • Improve the capacity of the ramps within the project limits 
    • Improve operational deficiencies of merge and diverge areas within the project limits 
    • Improve the existing auxiliary lanes operations 
    • Optimize access of the existing HOV lane 
    • The goal of the proposed project is to minimize environmental impacts as well as right-of-way (ROW) acquisitions within the project limits.
    No closures or detours are planned as part of the environmental study process.
    Overview

    Project Overview

    Proposed Improvements to I-5 through Irvine and Tustin

    The Interstate 5 Freeway (I-5) through the cities of Irvine and Tustin is essential to Orange County’s mobility, economy and quality of life. It is a major commuter and commercial corridor, and serves as a “bridge” that connects Orange County to Los Angeles County and San Diego County. Today, this segment of I-5 is one of the most highly traveled and congested freeway corridors in the nation. Every day, more than 350,000 motorists drive this segment of I-5 between I-405 and SR-55, to connect with major residential, commercial, educational and employment destinations.

    Environmental Study Underway

    This roadway is already at capacity and traffic projections show that nearly ½ million motorists will begin using this stretch of I-5 by 2040. To address this current and future traffic demand, OCTA and Caltrans are conducting the Project Approval/Environmental Document (PA/ED) phase for the I-5 Irvine Tustin Project. The PA/ED phase is commonly referred to as the environmental study phase, and includes preliminary engineering and environmental study. The purpose of the study is to measure the estimated benefits, feasibility and potential environmental effects of adding a new northbound (NB) and southbound (SB) general-purpose (regular) lane, as well as various other capital and operational improvements to I-5 adjacent to the cities of Irvine and Tustin.

    Schedule and Funding

    The environmental study phase is funded by OC Go, formerly Measure M, Orange County’s voter-approved Transportation Investment Plan. This study begin in late 2014 and is anticipated to be completed by late 2018.

    Details

    The Project Purpose and Need

    Currently, the I-5 corridor within the project limits is experiencing congestion and long traffic delays due to travel demand exceeding roadway capacity. The purpose of the project is to address existing and future traffic demand and congestion, and enhance freeway operations from I-405 to SR-55 as follows:

    • Increase the freeway capacity within the project limits with one additional lane in each direction 
    • Improve the capacity of the ramps within the project limits 
    • Improve operational deficiencies of merge and diverge areas within the project limits 
    • Improve the existing auxiliary lanes operations 
    • Optimize access of the existing HOV lane 
    • The goal of the proposed project is to minimize environmental impacts as well as right-of-way (ROW) acquisitions within the project limits.
    Detours
    No closures or detours are planned as part of the environmental study process.
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  • About the Project Area

    The project area is located through the cities of Irvine and Tustin. The project limits are bordered by I-405 on the south and SR-55 on the north.

    This nine-mile stretch of I-5 has interchanges connecting with SR-133 and SR-55. Additionally, it provides direct access to seven major west-east surface streets, including Sand Canyon Avenue, Jamboree Road and Red Hill Avenue, among others.

    Centrally located, the project area neighbors renowned residential communities with culturally diverse populations, nationally-recognized schools, major retail centers, as well as numerous leading employers.

    View Project Area Map

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