Amos K. Hutchinson Bypass PA Turnpike 66 begins in
New Stanton at a
cloverleaf interchange with
US 119, near the New Stanton Interchange of the
Pennsylvania Turnpike (
I-70/
I-76). Up to Arona Road, its first interchange, no tolls are collected. The route then meets
PA 136 before reaching the Hempfield Toll Plaza. Near
Jeannette, PA Turnpike 66 interchanges with
US 30 and
PA 130. North of here, the road meets
PA 66 Business before reaching the northern terminus of the same route further north. At this point, PA Turnpike 66 becomes PA 66 and the freeway ends at a traffic signal just north. PA 66 then meets
US 22 at a
single-point urban interchange.
Westmoreland County North of the Amos K. Hutchinson Bypass, PA 66 enters
Salem Township as Sheridan Road. In
Delmont, PA 66 is called Sheridan Road. In
Washington Township, PA 66 passes west of
Beaver Run Reservoir. In the village of Mamont, PA 66 intersects
Pennsylvania Route 286. In the village of Poke Run north of PA 286, PA 66 intersects the eastern terminus of
Pennsylvania Route 366. Then PA 66 intersects
Pennsylvania Route 380, PA 380 west heads for downtown
Pittsburgh. South of
Oklahoma, PA 66 intersects the southern terminus of
Pennsylvania Route 356. In the village of Paulton, PA 66 intersects the southern terminus of
Pennsylvania Route 66 Alternate. PA 66 Alternate goes into
Vandergrift and PA 66 goes into
Apollo. In
Oklahoma, PA 66 meets the northern terminus of
Pennsylvania Route 819. In downtown Oklahoma, PA 66 turns to the east and crosses the
Kiskiminetas River.
Armstrong County After crossing the
Kiskiminetas River, PA 66 enters
Armstrong County and begins a concurrency with
Pennsylvania Route 56 in
Apollo. As they began their concurrency, PA 56/PA 66 are called Warren Avenue in Apollo. As PA 56/PA 66 enter the boro of
North Apollo they parallel the Kiskiminetas River. In the village of North Vandergrift, the concurrency between PA 56 and PA 66 ends when PA 66 intersects PA 66 Alternate and PA 56 and PA 66 ALT begin their own concurrency into
Vandergrift. As PA 66 continues to parallel the Kiskiminetas River, it is called Lincoln Avenue. While paralleling the Kiskiminetas River, PA 66 has snake like curves. In
Leechburg, PA 66 becomes Market Street, 3rd Street, and Pershing Avenue. As PA 66 exits Leechburg it does not parallel the
Kiskiminetas River. In
Bethel Township, PA 66 meets the northern terminus of PA 66 Alternate. In
Ford City, PA 66 becomes Main Street and intersects the northern terminus of
Pennsylvania Route 128 at an "Y" intersection. Southeast of
Kittanning, PA 66 begins a concurrency with
U.S. Route 422 and
Pennsylvania Route 28 at an interchange. At the next exit US 422 leaves the concurrency and PA 28/PA 66 continue north at-grade. In
Rayburn Township, PA 28/PA 66 intersect the western terminus of
Pennsylvania Route 85. PA 28/PA 66 continue towards the northeast without intersecting a route for more than . In
South Bethlehem, PA 28/PA 66 become Broad Street and meet the northern terminus of
Pennsylvania Route 839. The route then crosses the Redbank Creek into Clarion County after spending 43 miles in Armstrong County.
Clarion County After crossing the Redbank Creek, PA 28/PA 66 enter
Clarion County. In
New Bethlehem, the concurrency between PA 28 and PA 66 ends when PA 66 leaves PA 28. North of PA 28, PA 66 becomes Wood Street and intersects the eastern terminus of
Pennsylvania Route 861. In
Clarion Township, PA 66 begins a concurrency with
Interstate 80 at exit 64. Then I-80/PA 66 meet
Pennsylvania Route 68 at exit 62. After crossing the
Clarion River, PA 66 leaves I-80 at exit 60 (
trumpet interchange). PA 66 continues north at grade. In
Paint Township, PA 66 intersects
U.S. Route 322 as Paint Boulevard. PA 66 continues towards the north paralleling rail road tracks. In
Farmington Township, PA 66 intersects
Pennsylvania Route 36.
Forest, Elk, and McKean counties As PA 66 enters
Forest County, PA 66 intersects the northern terminus of
Pennsylvania Route 899. In
Jenks Township, PA 66 enters
Allegheny National Forest. As PA 66 enters
Elk County, PA 66 has a concurrency with
Pennsylvania Route 948. Northeast of PA 948, PA 66 becomes Kane-Russell City Road. PA 66 enters
McKean County as Fraley Street. In
Kane, PA 66 ends at a "T" intersection with
U.S. Route 6. ==History==