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Pennsylvania Route 121
Pennsylvania Route 121 (PA 121) is a state highway located in Allegheny county in Pennsylvania. The southern terminus is at US 19 in Mt. Lebanon. The northern terminus is at PA 50 on the border of Green Tree and the Pittsburgh neighborhood of Westwood.
==Route description==
PA 121 begins at an intersection with US 19 in 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 with the Yellow Belt of the Pittsburgh/Allegheny County Belt System. 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 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. The road enters commercial areas, widening to four lanes as it reaches an interchange with I-376/US 22/US 30. 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 Pittsburgh in commercial areas.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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