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I-680 Corridor Study

Overview

The I-680 Corridor is an important north-south link connecting Alameda and Santa Clara counties.  It serves as a major commute route between the counties and as an interstate route connecting the South County region of the Bay Area to the rest of the Bay Area. The study limits extended approximately 10 miles from the Alameda/Santa Clara County border in the City of Milpitas to the 1-280/I-680 interchange in the City of San Jose.  

The intent of the study was to identify and evaluate a range of possible transportation-related improvement projects along the corridor.

The final I-680 Study report was completed in February 2016 and is available below.

Objective

Through a collaborative effort with local, State and regional stakeholders, the study will identify transportation improvement projects along the corridor that promote mobility and connectivity, enhance safety and security, support economic vitality and sustainability, and is sensitive to the environment and community values for programming and implementation.

Study Focus

  • Highway Improvements (e.g. interchange spacing, bottleneck relief, express lanes, etc.)
  • Bicycle and pedestrian improvements (e.g. access, cross connectivity, etc.)
  • Transit service improvements (VTA, BART, ACE, express bus, etc.)
  • Local Roadway improvements (e.g. cross connectivity, etc.)
  • Noise abatement (e.g. sound walls)

Report

I-680 Study Report

Appendix A - Data Collection

Appendix B - Soundwall Material

Appendix C - Public Outreach Material

Appendix D - Traffic Operations Assessment Material

Appendix E - Environmental Assessment Material

Appendix E-2 - Hazardous Materials Database Search

Appendix E-3 - Continued Hazardous Materials Database Search

Appendix F - Preliminary Cost Estimates

Schedule
Project Initiation:                                                 January 2015
Conceptual Alternatives Analysis:                       January - August 2015
Community/Public Outreach:                              August/September 2015
Corridor Study Report:                                        February 2016

Study Funding

$250,000                                                            Caltrans FY 2014-14 Transportation Planning Grant
$250,000                                                            VTA Local Program Reserve
$500,000                                                            Total Cost of Corridor Study


Fact Sheets


English | Spanish | Chinese | Korean | Tagalog | Vietnamese

VTA launched the Interstate 680 Survey in late August through an interactive crowdsourcing map that enabled the public to give input n specific geographic locations along the I-680 corridor in Santa Clara County.  Please see the infographic below for some results from the survey.

Please note, the correct percentage of people surveyed in favor of extending the HOV/Express Lanes into Santa Clara County is 59%, 53% as previously noted is incorrect.

I-680 HOV Express Lanes Infographic 2015

 

PUBLIC OUTREACH MEETINGS:

Thursday, September 10, 2015
5:30 p.m. to 7:00 p.m.
Berryessa Community Center
3050 Berryessa Road
San Jose, CA  95132

Download:  Meeting Presentation

 

 

 

 

 

 

I-680 Study - Potential Improvements

The illustrations below include potential improvements that were presented during the public workshop meeting to be proposed for inclusion in the overall strategic plan for the I-680 corridor and are not yet approved projects.  

Project Alternatives Overview

Typical Medium Cost Interchange Improvements

Capital Expressway Southbound Off-Ramp Flyover

Mainline Average Speed and Collision History

Existing Soundwalls

Express Lane Conceptual Alternatives

Express/Carpool Lane Alternatives

Carpool Lane Conceptual Alternatives

Potential Improvements at SR 237/Calaveras Blvd

Potential Improvements at McKee Road

Potential Improvements at Berryessa Road

Pedestrian Overcrossing at North Hillview Drive

Highway Improvements:  Mainline operational improvements, managed lanes, auxiliary lanes and on-ramp or off-ramp modifications that are intended to primarily improve highway operations along the corridor.

Local Street and Interchange Multi-Modal Improvements:  Local street and interchange improvements and bicycle or pedestrian upgrades on local streets, that primarily improve local street connections to freeway ramps, including converting full cloverleaf interchanges to partial cloverleaf interchanges and other levels of bicycle and pedestrian improvements along local streets.

Off-Street Bicycle and Pedestrian Improvements:  Pedestrian overcrossings or trails along creeks, etc.

 

 

 

  • Overview
  • Overview

    The I-680 Corridor is an important north-south link connecting Alameda and Santa Clara counties.  It serves as a major commute route between the counties and as an interstate route connecting the South County region of the Bay Area to the rest of the Bay Area. The study limits extended approximately 10 miles from the Alameda/Santa Clara County border in the City of Milpitas to the 1-280/I-680 interchange in the City of San Jose.  

    The intent of the study was to identify and evaluate a range of possible transportation-related improvement projects along the corridor.

    The final I-680 Study report was completed in February 2016 and is available below.

    Objective

    Through a collaborative effort with local, State and regional stakeholders, the study will identify transportation improvement projects along the corridor that promote mobility and connectivity, enhance safety and security, support economic vitality and sustainability, and is sensitive to the environment and community values for programming and implementation.

    Study Focus

    • Highway Improvements (e.g. interchange spacing, bottleneck relief, express lanes, etc.)
    • Bicycle and pedestrian improvements (e.g. access, cross connectivity, etc.)
    • Transit service improvements (VTA, BART, ACE, express bus, etc.)
    • Local Roadway improvements (e.g. cross connectivity, etc.)
    • Noise abatement (e.g. sound walls)

    Report

    I-680 Study Report

    Appendix A - Data Collection

    Appendix B - Soundwall Material

    Appendix C - Public Outreach Material

    Appendix D - Traffic Operations Assessment Material

    Appendix E - Environmental Assessment Material

    Appendix E-2 - Hazardous Materials Database Search

    Appendix E-3 - Continued Hazardous Materials Database Search

    Appendix F - Preliminary Cost Estimates

    Schedule
    Project Initiation:                                                 January 2015
    Conceptual Alternatives Analysis:                       January - August 2015
    Community/Public Outreach:                              August/September 2015
    Corridor Study Report:                                        February 2016

    Study Funding

    $250,000                                                            Caltrans FY 2014-14 Transportation Planning Grant
    $250,000                                                            VTA Local Program Reserve
    $500,000                                                            Total Cost of Corridor Study


    Fact Sheets


    English | Spanish | Chinese | Korean | Tagalog | Vietnamese
  • Updates
  • VTA launched the Interstate 680 Survey in late August through an interactive crowdsourcing map that enabled the public to give input n specific geographic locations along the I-680 corridor in Santa Clara County.  Please see the infographic below for some results from the survey.

    Please note, the correct percentage of people surveyed in favor of extending the HOV/Express Lanes into Santa Clara County is 59%, 53% as previously noted is incorrect.

    I-680 HOV Express Lanes Infographic 2015

     

    PUBLIC OUTREACH MEETINGS:

    Thursday, September 10, 2015
    5:30 p.m. to 7:00 p.m.
    Berryessa Community Center
    3050 Berryessa Road
    San Jose, CA  95132

    Download:  Meeting Presentation

     

     

     

     

     

     

  • Image Gallery
  • I-680 Study - Potential Improvements

    The illustrations below include potential improvements that were presented during the public workshop meeting to be proposed for inclusion in the overall strategic plan for the I-680 corridor and are not yet approved projects.  

    Project Alternatives Overview

    Typical Medium Cost Interchange Improvements

    Capital Expressway Southbound Off-Ramp Flyover

    Mainline Average Speed and Collision History

    Existing Soundwalls

    Express Lane Conceptual Alternatives

    Express/Carpool Lane Alternatives

    Carpool Lane Conceptual Alternatives

    Potential Improvements at SR 237/Calaveras Blvd

    Potential Improvements at McKee Road

    Potential Improvements at Berryessa Road

    Pedestrian Overcrossing at North Hillview Drive

    Highway Improvements:  Mainline operational improvements, managed lanes, auxiliary lanes and on-ramp or off-ramp modifications that are intended to primarily improve highway operations along the corridor.

    Local Street and Interchange Multi-Modal Improvements:  Local street and interchange improvements and bicycle or pedestrian upgrades on local streets, that primarily improve local street connections to freeway ramps, including converting full cloverleaf interchanges to partial cloverleaf interchanges and other levels of bicycle and pedestrian improvements along local streets.

    Off-Street Bicycle and Pedestrian Improvements:  Pedestrian overcrossings or trails along creeks, etc.

     

     

     

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