 PA 519 turns northwest and reaches its northern terminus at PA 50.From 1936 to 1941, the original PA 519 was an Allegheny/Washington County route, running for 14.2 miles from the intersection of Saw Mill Run Blvd.and West Liberty Avenue (bordering the Pittsburgh neighborhoods of Brookline and Beechview) to U.S. 19 (Morganza Road) in Morganza/North Strabane Township.