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Pittsburgh Closes I-376 for 25 Days to Replace Bridge
A 25-day shutdown east of the Squirrel Hill Tunnel begins July 10 as crews replace the Commercial Street Bridge, with local officials focusing on travel planning resources for the affected corridor.
How we reported this
A section of Interstate 376 east of the Squirrel Hill Tunnel will close for 25 days starting July 10, 2026, to allow demolition of the old Commercial Street Bridge and installation of a replacement structure built alongside it.
Why the timing stands out for daily travel
The affected stretch of the Parkway East handles roughly 100,000 vehicles each day, making the upcoming window one that will touch a large share of regional commutes. Pittsburgh officials have released details on detours and travel adjustments well ahead of the July start date, giving drivers time to adjust routines before the work begins.
Bridge replacement details tied to the closure
The project centers on removing the existing Commercial Street Bridge and putting a new one in its place next to the original alignment. This method keeps some construction activity off the main roadway until the switchover, a step that limits the total length of the full closure to the announced 25 days.
How Pittsburgh is communicating the work
Local reporting from WESA shows that planners have prepared detour maps and travel-planning guidance specifically for Pittsburgh-area commuters. This focus on clear, early information mirrors the approach many large cities take when major road projects affect high-volume routes, allowing residents and businesses to factor the changes into their schedules in advance.
What drivers should do before July 10
Commuters are encouraged to review the detour and planning materials already released so they can identify alternate routes that fit their usual trips. Checking updates from official transportation sources as the date approaches will help account for any final adjustments once the closure is underway.