Pennsylvania Route 121 (PA 121) is a
state highway located in
Allegheny County in
Pennsylvania
Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
. The southern terminus is at
U.S. Route 19
U.S. Route 19 (US 19) is a north–south U.S. Highway in the Eastern United States. Despite encroaching Interstate Highways, the route has remained a long-haul road, connecting the Gulf of Mexico with Lake Erie.
The highway's southern ...
(US 19) in
Mt. Lebanon. The northern terminus is at
PA 50 on the border of
Green Tree and the
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the second-most populous city in Pennsylva ...
neighborhood of
Westwood.
Route description
PA 121 begins at an intersection with
US 19
U.S. Route 19 (US 19) is a north–south U.S. Highway in the Eastern United States. Despite encroaching Interstate Highways, the route has remained a long-haul road, connecting the Gulf of Mexico with Lake Erie.
The highway's souther ...
in the township of
Mt. Lebanon, heading northwest on Cochran Road, a two-lane undivided road that heads through residential areas. From the southern terminus, the route is
concurrent
Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to:
Law
* Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea''
* Concurring opinion (also called a "concurrence"), a ...
with the
Yellow Belt of the
Pittsburgh/Allegheny County Belt System
The Allegheny County Belt System color codes miscellaneous county roads to form a unique system of routes in Allegheny County, Pennsylvania, and around the city of Pittsburgh.
Unlike many major American cities that utilize number-coded limited-a ...
. The road widens to four lanes as it enters commercial areas and becomes the border between Mt. Lebanon to the southwest and
Scott Township to the northeast. PA 121 splits from the Yellow Belt and Cochran Road by turning north onto four-lane Greentree Road, fully entering Scott Township. The road passes through residential and commercial areas as it turns to the northeast, narrowing to two lanes as it enters the borough of
Green Tree. In this area, the route passes more homes, with the
Blue Belt joining the road at the Potomac Avenue intersection. PA 121 curves to the north, becoming a three lane road with a
reversible lane
A reversible lane (British English: tidal flow) is a lane in which traffic may travel in either direction, depending on certain conditions. Typically, it is meant to improve traffic flow during rush hours, by having overhead traffic lights and li ...
. The road enters commercial areas, widening to four lanes as it reaches an interchange with
I-376/
US 22/
US 30
U.S. Route 30 or U.S. Highway 30 (US 30) is an east–west main route in the system of the United States Numbered Highways, with the highway traveling across the northern tier of the country. With a length of , it is the third longest ...
. Immediately after this interchange, PA 121 turns west onto Mansfield Avenue, a three lane road with one northbound lane and two southbound lanes. The route turns north onto two-lane Poplar Street and heads into wooded areas of homes. PA 121 heads northwest to reach its northern terminus at
PA 50 on the border of Green Tree and the city of
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the second-most populous city in Pennsylva ...
in commercial areas.
History
The original PA 121 ran from East Waynesburg to Point Marion in Greene County from 1928 to 1950. In 1961, PA 121 was reactivated and reassigned to its current route. From 1940 to 1946, the Greentree Road segment of the present-day PA 121 from Cochran Road to Mansfield Avenue was designated as PA 802.
Major intersections
See also
*
*
References
External links
{{commonscat
Pennsylvania Highways: PA 121
121