 The route is not marked as PA 88 on the official 1930 map but is so marked on the 1940 map.The Pittsburgh-to-New Castle section was largely split off on July 15, 1960 to form Pennsylvania Route 65, in honor of the 65th Infantry Division of the United States Army during World War II.The 7.7 mile stretch of PA 88 from PA 65's current southern terminus at the West End Bridge to PA 88's current northern terminus was decommissioned.