Imperial Highway and Pioneer Boulevard


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    Weekly Construction Updates

  • Project Information

    Improvements: HOV lane, one mixed-flow lane in each direction, interchange modifications at San Antonio Dr. undercrossing, Imperial Highway undercrossing, Pioneer Boulevard undercrossing, and Orr and Day Road.
    Start Date: 2013
    Completion: *Spring 2019
    Currently: 95% complete.
    Overall Project Cost: $323 Million
    Project Construction Cost: $144.5 Million

    The new Imperial Highway on ramp to northbound I-5 is open.
    The new Imperial Highway off ramp from southbound I-5 is open.
    The new San Antonio Dr. on ramp to  southbound I-5 is open.

    Pioneer Bridge: Construction complete.
    San Antonio Bridge: Construction complete.
    Imperial Highway Bridge: Construction complete.

    Crews are placing decorative tile on the walls of the San Antonio, Imperial Highway, and Pioneer Blvd. bridges under I-5.

    Photos below from under the San Antonio Bridge on May 14:

    Photos below are from under the Imperial Highway Bridge on May 14, May 28, and June 5:

    • The median barrier rail along the new lanes of I-5 north of Imperial Highway is complete. Photos below show the construction:
    • A new median on Norwalk Blvd. north of the San Antonio Bridge is complete. Photos below:

    The Pioneer Blvd. on ramp to northbound I-5 is permanently closed to allow the addition of lanes to northbound I-5.

    Project Benefits

    • Increasing capacity by widening the freeway
    • Accommodating future projected traffic demands
    • Extending the HOV lanes.
    • Enhancing safety
    • Revitalizing our I-5 community



Project Map

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