Commercial Street Bridge Replacement Project
Project Overview
The $95 million I-376 Commercial Street Bridge Replacement project is between the Edgewood/Swissvale (Exit 77) interchange in Swissvale Borough and Squirrel Hill Tunnel in the City of Pittsburgh spans over Nine Mile Run, Frick Park, and Commercial Street. This project will utilize Accelerated Bridge Construction (ABC) Techniques to laterally slide the new bridge onto the existing alignment of I-376. The Arched Delta Frame Structure will be built just south of the existing Commercial Street Bridge on temporary foundations and will be slid onto the existing alignment once demolition of the existing bridge has occurred. Work will also include the installation of new overhead signage and eastbound retaining wall, lowering the westbound I-376 off-ramp to Forest Hills/Wilkinsburg Interchange (Exit 78B) to increase vertical clearance under the Parkway East, concrete median barrier replacement, sanitary sewer line relocation, upgrades to guide rail, ITS Devices, Over Height Truck Detection System, and CCTV Cameras, as well as overall site restoration for both Frick Park and the Frick Park walking trail. Motorists can expect single-lane and shoulder restrictions in each direction of I-376 on weekends and weeknights as needed through 2026. Additionally, in 2025, several overnight full closures and detours of eastbound I-376 and a full weekend closure and detour of I-376 in each direction are anticipated to occur. In 2026, motorists can expect a 25-day full closure and detour of I-376. The overall project is anticipated to conclude in the summer of 2027. The Joseph B. Fay Company is the prime contractor.
Visual depictions below:
Project Update
6/14/2024 - PennDOT District 11 is announcing a ramp restriction on I-376 (Parkway East) in Churchill and Wilkinsburg boroughs, Allegheny County, will begin Monday, June 17 weather permitting.
Starting Monday, shoulder restrictions will occur on the westbound I-376 ramp to Wilkinsburg/Route 8 North (Exit 78B) weekdays from 9 a.m. to 5 p.m. through early July. The ramp will remain open as this work occurs. Crews will work to remove the guide rail along the ramp in preparation for future work.
Press Release