Pittsburgh, PA – The Pennsylvania Department of Transportation (PennDOT) is announcing the slide of the new I-376 (Commercial Street Bridge) in Edgewood Borough and the City of Pittsburgh, Allegheny County, is underway.
The lateral slide of the new I-376 Commercial Street Bridge between the Squirrel Hill Tunnel and the Edgewood/Swissvale (Exit 77) interchange is currently underway. Slide operations began at approximately 10:00 AM today, Sunday morning. A notification will be provided once the slide is completed.
The fully constructed new bridge will move 102 feet into place. A skidding system will be used to slowly move the bridge to align with the I-376 Parkway East. Each of the 42 skid shoes installed have the ability to operate independently, with integrated hydraulic jacks used to lift the load from its temporary supports and set it down on the permanent bearings.
The explosive demolition occurred at approximately 8:00 AM Thursday morning, July 16. Crews then continued to demolish the remnants of the former bridge and cleared the necessary debris prior to beginning the slide of the new bridge.
The public can view the slide from a safe distance via the live feed camera displaying the Commercial Street Bridge on the Commercial Street Bridge webpage or the specialized 511PA webpage at https://www.511pa.com/map/page/CommercialStBridge. The camera will run live through the closure of the bridge.
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 will 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). The overall project is anticipated to conclude in the summer of 2027.
To help keep travelers informed as work progresses, PennDOT has created an email distribution list for Parkway East traffic advisories and construction updates. Enroll by clicking on the Parkway East online sign-up form link and entering your email address.
For questions about the project and detours, please email the project team at CommStBridgeProject@pa.gov.
Updates can also be found on the Commercial Street Bridge webpage, by following PennDOT’s regional X page @511PAPittsburgh or joining the Greater Pittsburgh Area PennDOT Facebook group.
Travelers can check conditions on major roads by visiting www.511PA.com or visit the Commercial Street Bridge Replacement project’s specialized webpage for real-time detour times. 511PA, which is free and available 24 hours a day, provides traffic delay warnings, weather forecasts, traffic speed information and access to more than 1,200 traffic cameras. 511PA is also available through a smartphone application for iPhone and Android devices, by calling 5-1-1, or by following regional X alerts.
Find PennDOT’s planned and active construction projects at www.pa.gov/DOTprojects. Subscribe to PennDOT news and find transportation results in Allegheny, Beaver, and Lawrence counties at www.pa.gov/DOTdistrict11.
Find PennDOT news on X, Facebook, Instagram and LinkedIn.
MEDIA CONTACT: Yasmeen Manyisha, ymanyisha@pa.gov or 412-429-5044
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