Pennsylvania Route 108 is a highway in Western Pennsylvania that runs for 32 miles (51 km) from the Ohio state line near SNPJ to PA 8 in Adams Corner. PA 108 intersects Interstate 376 (I-376) near New Castle and U.S. Route 19 (US 19) near Harlansburg. PA 108 also has an interchange with Interstate 79 (I-79) at exit 105.

S.N.P.J. is a borough in western Lawrence County, Pennsylvania, United States. As of the 2020 Census, the borough had a population of 15. It is part of the Pittsburgh metropolitan area.