 In the 1950s, the west end was cut back to US 422 in Hershey.The western terminus was scaled back to PA 441 in Marietta by 1962 and its current location by 1970, with the former alignment now PA 743 between Hershey and Marietta and PA 23 between Marietta and Lancaster.PA 340 begins at an intersection with PA 462 in the community of Bridgeport in East Lampeter Township, Lancaster County, heading east on two-lane undivided Old Philadelphia Pike.