 By 1930, the concurrent PA 130 designation was removed along this stretch of US 309, which intersected PA 29 in Schnecksville and PA 45 in Lehigh Gap.US 309 was shifted west to a new alignment between Allentown and Hazleton in the 1950s, and PA 29 was shifted east to follow the road running between Schnecksville and Lehigh Gap.On May 9, 1966, the PA 29 designation between Allentown and West Nanticoke was removed, splitting the route into two segments.