 The route ran north to Red Lion, where it followed PA 74 northwest to York before running north along US 111 to North York and continuing north to York Haven, west to Lewisberry, and north to New Market.In the 1950s, the north end of PA 24 was cut back to Interstate 83 (I-83)/US 111 southwest of New Market.In York, the route was split into one-way pairs in the downtown area while US 111 Alternate (US 111 Alt.)