 PA 129 was designated along the portion of road between US 122/PA 29 and PA 352.PA 926 was first designated by 1928 to run from US 122/PA 29 east to PA 129 along unpaved Oakbourne Road and paved Concord Road and Westbourne Road.By 1930, PA 926 was realigned to follow Street Road between US 122 and PA 352, replacing the PA 129 designation on this stretch which was shifted to a road further south.