Pittsburgh, PA – The Pennsylvania Department of Transportation (PennDOT) is announcing a 25-day closure on I-376 (Parkway East) in Edgewood Borough and the City of Pittsburgh, Allegheny County, will occur July 10 through August 3 weather permitting.
A full closure of I-376 in each direction between the Squirrel Hill Tunnel and the Edgewood/Swissvale (Exit 77) interchange will occur around-the-clock from 9:00 PM Friday, July 10 through 5:00 AM Monday, August 3 as crews demolish and replace the I-376 Commercial Street Bridge. Traffic will be detoured.
Posted Detours
Local Detour
From Westbound I-376
· Take the Edgewood/Swissvale (Exit 77) exit
· At the end of the ramp, turn left onto South Braddock Avenue
· Continue onto the Rankin Bridge
· Turn right onto Route 837 (River Road)
· Continue onto Route 837 (8th Avenue)
· Turn right onto the Homestead Grays Bridge
· Continue onto Browns Hill Road
· Continue straight onto Beechwood Boulevard
· Follow signs for westbound I-376 toward Pittsburgh
· Take the ramp to westbound I-376 toward Pittsburgh
· End detour
From Eastbound I-376
· Take the Squirrel Hill/Homestead (Exit 74) exit, continuing straight onto Beechwood Boulevard toward Homestead
· Continue straight onto Browns Hill Road
· Continue onto the Homestead Grays Bridge
· Turn left onto Route 837 (8th Avenue)
· Continue straight on Route 837 (River Road)
· Turn left onto the Rankin Bridge
· Continue onto South Braddock Avenue
· Bear right to merge onto eastbound I-376 toward Monroeville
· End detour
Interstate Detour
From Westbound I-376
· Take the Wilkinsburg (Exit 78B) exit toward Route 8 North
· Merge onto Route 8 (Ardmore Boulevard)
· Continue straight onto Route 8 (Penn Avenue)
· Turn left onto Fifth Avenue
· After going through Oakland, take the ramp to the left for westbound I-376. Use caution for opposing traffic.
· Merge onto the Boulevard of the Allies and stay in the right lane to merge onto westbound I-376 toward Downtown/Fort Pitt Bridge
· Continue straight to merge onto westbound I-376
· End detour
From Eastbound I-376
· Take the Forbes Avenue/Oakland (Exit 72A) exit
· Merge onto Forbes Avenue
· Turn left onto South Bellefield Avenue
· Turn right onto Fifth Avenue
· Turn right onto Route 8 (Penn Avenue)
· Bear right to continue on Route 8 (Ardmore Boulevard)
· Take the ramp to 376/22/30 toward Pittsburgh/Monroeville
· At the split, bear left to eastbound 376/22 toward Monroeville
· Merge onto eastbound I-376
· End detour
Police will assist drivers at major intersections along the detour routes.
To avoid extensive delays on the posted detours, the department suggests the following alternate routes for travelers’ consideration, which can also be found on the Commercial Street Bridge webpage:
· Alternate Route1: I-76 and I-79
· Alternate Route 2: I-76 and Route 28
· Alternate Route 3: Route 48 and Route 148
In conjunction with the bridge closure, starting 9:00 PM on Friday, July 10, the following ramps will be closed and detoured through 5:00 AM Monday, August 3 to increase the flow of traffic:
· Churchill on-ramp to westbound I-376
· Forest Hills on-ramp to westbound I-376
· Swissvale on-ramp to westbound I-376
· Edgewood on-ramp to westbound I-376
· Boulevard of the Allies on-ramp to eastbound I-376
· Oakland/Bates Street on-ramp to eastbound I-376
· Squirrel Hill/Beechwood Boulevard on-ramp to eastbound I-376
· Edgewood on-ramp to eastbound I-376
Posted Detours
Churchill on-ramp to westbound I-376
· Continue on William Penn Avenue
· Continue straight onto Route 8 (Penn Avenue)
· Turn left onto Fifth Avenue
· After going through Oakland, take the ramp to the left for westbound I-376. Use caution for opposing traffic
· Merge onto the Boulevard of the Allies and stay in the right lane to merge onto westbound I-376 toward Downtown/Fort Pitt Bridge
· Continue straight to merge onto westbound I-376
· End detour
Forest Hills on-ramp to westbound I-376
· Continue onto Route 8 (Ardmore Boulevard)
· Bear left to continue on Route 8 (Penn Avenue)
· Turn left onto Fifth Avenue
· Bear left onto the ramp toward westbound I-376 to the Boulevard of the Allies
· After going through Oakland, take the ramp to the left for westbound I-376. Use caution for opposing traffic
· Merge onto the Boulevard of the Allies and stay in the right lane to merge onto westbound I-376 toward Downtown/Fort Pitt Bridge
· Continue straight to merge onto westbound I-376
· End detour
Edgewood on-ramp to westbound I-376
· Continue on South Braddock Avenue to the Rankin Bridge
· Turn right onto Route 837 (River Road)
· Continue onto Route 837 (8th Avenue)
· Turn right onto the Homestead Grays Bridge
· Continue onto Browns Hill Road
· Continue straight onto Beechwood Boulevard
· Follow signs for westbound I-376 toward Pittsburgh
· Take the ramp to westbound I-376 toward Pittsburgh
· End detour
Swissvale on-ramp to westbound I-376
· Continue on South Braddock Avenue
· Turn left onto Route 8 (Penn Avenue)
· Turn left onto Fifth Avenue
· After going through Oakland, take the ramp to the left for westbound I-376. Use caution for opposing traffic
· Merge onto the Boulevard of the Allies and stay in the right lane to merge onto westbound I-376 toward Downtown/Fort Pitt Bridge
· Continue straight to merge onto westbound I-376
· End detour
Boulevard of the Allies on-ramp to eastbound I-376
· Continue straight on Route 885 (Boulevard of the Allies)
· Take the ramp on the right toward Forbes Avenue
· Merge onto Forbes Avenue
· Turn left onto South Bellefield Avenue
· Turn right onto Fifth Avenue
· Turn right onto Route 8 (Penn Avenue)
· Bear right to continue on Route 8 (Ardmore Boulevard)
· Take the ramp to 376/22/30 toward Pittsburgh/Monroeville
· At the split, bear left to eastbound 376/22 toward Monroeville
· Merge onto eastbound I-376
· End detour
Oakland/Bates Street on-ramp to eastbound I-376
· From Bates Street, turn onto Second Avenue
· Continue on Second Avenue, which turns into Route 885 (Irvine Street)
· Cross the Glenwood Bridge
· Exit right toward Route 837/Glass Run Road/Carson Street/Homestead
· Turn left onto Glass Run Road
· Turn left onto the ramp toward Carson Street/Homestead/Glenwood Bridge
· Stay in the center lane to bear left toward Route 837/Homestead
· Bear right to stay on Route 837 toward Homestead
· Continue straight on Route 837 (8th Avenue)
· Continue straight on Route 837 (River Road)
· Turn left onto the Rankin Bridge
· Continue onto South Braddock Avenue
· Bear right to merge onto eastbound I-376 toward Monroeville
· End detour
Squirrel Hill/Beechwood Boulevard on-ramp to eastbound I-376
· From Beechwood Boulevard, take Murray Avenue
· Turn right onto Wilkins Avenue
· Turn left onto Dallas Avenue
· Turn right onto Route 8 (Penn Avenue)
· Bear right to continue on Route 8 (Ardmore Boulevard)
· Take the ramp to 376/22/30 toward Pittsburgh/Monroeville
· At the split, bear left to eastbound 376/22 toward Monroeville
· Merge onto eastbound I-376
· End detour
Edgewood on-ramp to eastbound I-376
· Continue on Monogahela Avenue
· Make a quick right onto Schoyer Avenue
· Make a quick left back onto Monogahela Avenue
· Turn left onto Church Street
· Turn left onto South Braddock Avenue
· Take the on-ramp to eastbound I-376
· End detour
Additionally, starting July 10 at 9:00 PM, I-376 will be reduced to a single lane of traffic in each direction between the Edgewood/Swissvale (Exit 77) and Wilkinsburg (Exit 78B) interchanges around-the-clock until the Commercial Street Bridge reopens to traffic in early August.
Special notes:
· Travelers headed westbound I-376 will be able to access the Edgewood/Swissvale (Exit 77) interchange.
· The Squirrel Hill/Homestead (Exit 74) interchange will remain open in each direction.
· The ramp from the Boulevard of the Allies to westbound I-376 will remain open.
· The ramp from Swissvale to eastbound I-376 will remain open.
· The Forest Hills on-ramp to eastbound I-376 will remain open.
During the bridge closure, Route 885 (Boulevard of the Allies) will be reduced to a single lane of traffic in the southbound (inbound) direction to assist with the flow of traffic.
PennDOT would like to remind travelers to be patient, use caution and avoid distractions on the road. As some of the detours take traffic through the city and residential neighborhoods, please keep an eye out for pedestrians and bicyclists.
Pedestrians and cyclists are also reminded of the increased traffic along and near the detour routes and are encouraged to remain alert, increase their visibility, and abide by the rules of the road.
Please remember safety is everyone’s responsibility.
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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