State highway in Franklin County, Pennsylvania, US
Pennsylvania Route 163 (PA 163) is a state highway in the U.S. state of Pennsylvania. The state highway, which is a two-lane undivided road its entire length, runs 2.384 miles (3.837 km) from the Maryland state line, where the highway continues south as Maryland Route 63 (MD 63), east to U.S. Route 11 (US 11) in Antrim Township in southern Franklin County. The route begins at the Maryland border by following Williamsport Pike north before it quickly turns east onto Mason Dixon Road, with State Route 3001 (SR 3001) continuing north on Williamsport Pike. PA 163 runs immediately to the north of the state line along Mason Dixon Road, coming to an interchange at Interstate 81 (I-81) before ending at US 11. The Williamsport Pike section of the route was originally a 19th-century turnpike connecting Williamsport, Maryland, with Greencastle, Pennsylvania. Williamsport Pike was paved by 1930 while Mason Dixon Road was paved in the 1930s. PA 163 was designated to its present alignment in the 1960s.