 The unnumbered road between Red Lion and Mount Wolf was paved in the 1930s.In the 1950s, the northern terminus of PA 24 was cut back to an interchange with I-83/US 111 southwest of New Market.In addition, US 30/PA 24/PA 74 was moved onto the one-way pair of Market Street eastbound and Philadelphia Street westbound in York while US 111 Alt.