Pennsylvania State Route 66 is a north-south highway in Western Westmoreland County. It runs from Interstate 70/76, Pennsylvania Turnpike, and U.S. Rt. 119, at New Stanton, to the Westmoreland/Armstrong County Line, near Leechburg.
The section around Greensburg is known as Amos K. Hutchinson Bypass. This sections is a toll highway. It is signed at Pennsylvania Turnpike 66. There is one mainline toll plaza on this highway. PA St Rt 66 passes through the following towns in Westmoreland County. New Stanton Jeannette Delmont Vandergrift Leechburg PA St Rt 66 is not multi-plexed in Westmoreland County. PA St Rt 66 intersects the following highways in Westmoreland County. Interstate 70, at New Stanton. Interstate 76, at New Stanton. Pennsylvania Turnpike, at New Stanton. U.S. Rt. 119, at New Stanton.
Branches of PA St Rt 66 in Westmoreland County. A BGS on EB I-76/PA Turn. A BGS on WB I-70/76/PA Turn. A BGS on WB I-70/76/PA Turn. A BGS on EB I-70. A guide marker on EB U.S. Rt. 30.
