 By 1926, Legislative Route 142 was paved.PA 340 was assigned in 1928 to the alignment extending from US 222/PA 240 (Horseshoe Road) east of Lancaster to US 30/PA 1 in Gap via White Horse.US 222/PA 240 was designated along the current alignment west to US 30/PA 1 (now PA 462) while the current route east of White Horse existed as an unpaved road with small paved sections west of PA 82 and north of Thorndale.