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    District 11 Projects - Allegheny County

    ​I-376 Parkway East - Commercial Street Bridge Replacement

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    Project Status

    Step 3 of 4

    Construction

    Next Step:  Completed

    Project Overview

    County: Allegheny
    Municipality: City of Pittsburgh
    State Route: I-376
    Local Name: Commercial Street Bridge
    Project Type: Bridge Replacement
    Construction Start: 2024
    Construction End: Summer 2027
    Last Updated: 07/29/2026

    The Commercial Street Bridge Replacement Project utilized Accelerated Bridge Construction (ABC) Techniques to laterally slide the new bridge onto the existing alignment of I-376 (Parkway East), it was one of the largest lateral slide projects performed in Pennsylvania. The $95 million project located between the Edgewood/Swissvale (Exit 77) interchange and Squirrel Hill Tunnel in Edgewood and Swissvale boroughs, and the City of Pittsburgh began in June of 2024 with the reconstruction of the westbound I-376 off-ramp to Forest Hills/Wilkinsburg (Exit 78B).

    A 17-day full closure occurred on I-376 Parkway East for crews to demolish the former bridge and laterally slide the new 22-million-pound bridge into place. The closure began on July 10, 2026, and the parkway reopened to traffic on July 27, 2026, one full week ahead of schedule.

    The overall project is anticipated to conclude in the summer of 2027. 

    Attention Travelers: I-376 Parkway East has reopened to traffic in each direction

    The $95 million project is one of the largest of its kind ever performed in Pennsylvania and was completed a week ahead of schedule.

    Demolishing the old bridge, laterally sliding in the new bridge, and reopening the roadway were completed in just 17 days.

    Full Details

    Artist Renderings of Project

    Commercial Street Bridge rendering

    How did the 22-million-pound bridge slide into place?

    Check out the animation below or view on our YouTube channel.

    Accessibility

    The project documents can be made available in alternative languages or formats if requested. If you need translation or interpretation services, have special needs, or have concerns that require individual attention, please contact the Project Manager listed above.

    Title VI

    Pursuant to the Title VI of the Civil Rights Act of 1964, PennDOT does not discriminate on the basis of race, color, national origin, gender, age, or disability. If you feel that you have been denied the benefits of, or participation in a PennDOT program or activity, you may contact the PennDOT, Bureau of Equal Opportunity, DBE/Title VI Division at 717-787-5891.