Pennsylvania Statutes Title 36 P.S. Highways and Bridges § 1615. Route 639. From Trafford to Greensburg

Starting at the westerly end of the ramps connecting Ardmore Boulevard in Chalfant and North Braddock Boroughs with Route 120 in Allegheny County; thence easterly through the Boroughs of Chalfant, North Braddock, East Pittsburgh, Turtle Creek, Wilmerding, Pitcairn, and Patton Township to a point on the dividing line between Allegheny and Westmoreland Counties in the Borough of Trafford; thence in an easterly direction by way of Harrison City and Jeannette to the City of Greensburg, in Westmoreland County.