Commercial Street Bridge Replacement on I-376 Parkway East

under construction

A $95 million project to replace the aging 1950s-era Commercial Street Bridge on a 3-mile stretch of I-376 Parkway East between the Squirrel Hill Tunnel and the Edgewood/Swissvale interchange. The project involves demolishing the old bridge and sliding a new 22-million-pound structure into place using accelerated bridge construction techniques. The closure started on July 10, 2026, and is expected to last 25 days, with the project wrapping up in 2027. The closure has caused significant traffic detours and congestion in Pittsburgh's East End neighborhoods.