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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

    Public Outreach

    Virtual Public Meeting

    PennDOT and Fay, S&B USA Construction held a virtual public meeting on Wednesday, May 13, 2026, to discuss the I-376 Commercial Street Bridge Replacement Project. Public awareness throughout the construction process is very important to the success of the project. This briefing offered the opportunity to hear about the upcoming traffic I-376 closure and future work plans, with a Q&A session with the project team.

    Watch the public meeting recording in the video below.

    View the Presentation Document (PDF)

    If you desire to view this presentation in a different language or require special assistance when viewing it, please contact John Myler at CommStBridgeProject@pa.gov.

    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: 06/22/2026

    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. 

    Commercial St. & Nine Mile Run Trail - 06/17/2026 Update

    Commercial Street/Forward Avenue and Nine Mile Run Trail closure will begin approximately 7:00 a.m. on Monday, June 29 and continue through early August.

    Crews will perform preparatory work leading to the upcoming demolition of the existing I-376 Commercial Street Bridge followed by the newly built bridge being slid into place. For the safety of the public, the road and trail must be clear of vehicle, bicycle, and pedestrian traffic through the work zone as these operations occur. Following the reopening of I-376, once cleanup is complete and it has been determined Commercial Street and Nine Mile Run Trail is safe for use, both the road and trail will reopen to traffic.

    Full Details

    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.