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    District 11 Projects - Allegheny County

    ​I-376 Parkway East - Commercial Street Bridge Replacement

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    Live Stream Camera

    View the live stream of the Commercial Street Bridge Project below, or visit https://pacast.com/live/i376.

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    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: 07/10/2026

    The Commercial Street Bridge Replacement Project will utilize Accelerated Bridge Construction Techniques to laterally slide the new bridge onto the existing alignment of I-376 (Parkway East), which would be 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). Tentatively, from July 10 through August 3, 2026, drivers can expect a 25-day full closure and detour of I-376. The overall project is anticipated to conclude in the summer of 2027. 

    Attention Travelers: I-376 Closure Begins July 10 at 9:00 p.m.

    A 25-day closure on I-376 Parkway East in Edgewood Borough and the City of Pittsburgh, Allegheny County, will occur July 10 - August 3.

    A full closure of I-376 in each direction between the Squirrel Hill Tunnel and the Edgewood/Swissvale (Exit 77) interchange will occur around-the-clock from 9:00 p.m. Friday, July 10 through 5:00 a.m. Monday, August 3 as crews demolish and replace the I-376 Commercial Street Bridge. Traffic will be detoured.

    Full Details

    Project Status

    Step 3 of 4

    Construction

    Next Step:  Completed

    Artist Renderings of Project

    Commercial Street Bridge rendering

    How will the 11,000-ton bridge be slid 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.