Moon Township Pennsylvania • 1000 Beaver Grade Road, Moon Township, PA 15108 • 412.262.1700

Thorn Run Interchange Work Resumes in Moon Township


Thorn Run Interchange Work Resumes in Moon Township Pittsburgh, PA – PennDOT District 11 is announcing the Thorn Run Interchange (Robert E. Harper Interchange) improvement project has resumed in Moon Township, Allegheny County. Currently, the Business Loop 376 off-ramp at the Thorn Run interchange is closed to traffic. Motorists are being detoured.

Posted Detour:

  • From westbound Business Loop 376 take the Ewing Road off-ramp
  • Turn right onto Ewing Road
  • Turn left onto Cherrington Parkway
  • Follow Cherrington Parkway to the intersection of Thorn Run Road Extension and Coraopolis Heights Road
  • End detour

The $9.42 million project includes ramp construction, widening, traffic signal installation, drainage improvements, guide rail upgrades, curb and sidewalk repairs, and structure work at the interchange near Coraopolis Heights Road, Thorn Run Road Extension, and Cherrington Parkway. Lane and shoulder restrictions will occur on Business Route 376 and other roads during construction. Golden Triangle Construction is the prime contractor. Additional details will be provided prior to phase changes impacting traffic. Motorists can check conditions on more than 40,000 roadway miles by visiting 511PA, which is free and available 24 hours a day, provides traffic delay warnings, weather forecasts, traffic speed information and access to more than 860 traffic cameras.

511PA is also available through a smartphone application for iPhone and Android devices, by calling 5-1-1, or by following regional Twitter alerts accessible on the 511PA website.

Get In Touch

Contact Information

Municipal Building
1000 Beaver Grade Road
Moon Township, PA 15108

Fill out the form below to get in touch with a member of our townships staff. Or reach us by email at or by phone at 412.262.1700.