In 1928, the road between Hegins and Newtown was designated as PA 125, which was unpaved. By 1930, PA 25 was paved between Millersburg and Killinger, between Berrysburg and west of Gratz, and a short distance to the south of Hegins while the road between Killinger and Curtin was under construction.
In 1928, the road between Hegins and Newtown was designated as PA 125, an unpaved route. By 1930, PA 25 was paved between Millersburg and Killinger, between Berrysburg and west of Gratz, and a short distance south of Hegins. Construction on the road between Killinger and Curtin was underway during this period.