Pennsylvania Route 121

Pennsylvania Route 121
Route information
Maintained by PennDOT
Length	4.00 mi[1] (6.44 km)
Existed	1928–present
Major junctions
South end	US 19 in Mt. Lebanon
Major intersections	I-376 / US 22 / US 30 in Green Tree
North end	PA 50 in Pittsburgh
Location
Country	United States
State	Pennsylvania
Counties	Allegheny
Highway system
Pennsylvania State Route System Interstate US State Scenic Legislative
← PA 120 → US 122

Pennsylvania Route 121 (PA 121) is a 4.00-mile-long (6.44 km) state highway located in Allegheny County in Pennsylvania. The southern terminus is at U.S. Route 19 (US 19) in Mt. Lebanon. The northern terminus is at PA 50 on the border of Green Tree and the Pittsburgh neighborhood of Westwood.