 The east end back then was still at US 30, unchanged from today.On its way eastward, PA 31 met the southern terminus of PA 28 near Avella, was concurrent with PA 18 and US 19, and traded paths with US 40 in Washington.In September 1964, the western terminus of PA 31 was truncated to its current location at the intersection of Mount Pleasant Road and Greensburg Pike in West Newton.