 In 1924, the William Penn Highway was designated as PA 3 with the establishment of the first state route numbers in Pennsylvania.With the establishment of the U.S. Highway System in 1926, the road between Harrisburg and Reading was designated as part of US 22, which ran concurrent with PA 3/PA 13, while the road between Reading and Philadelphia was designated as part of US 120, which ran concurrent with PA 13.The same year, plans were made for the Benjamin Franklin Highway, which would connect Philadelphia and Omaha, Nebraska, following US 120 between Philadelphia and Reading and US 22 between Reading and Harrisburg.