On September 22, 1936, SH 175 was restored. On September 26, 1939, SH 59 was rerouted over SH 175, and the old route of SH 59 was renumbered as new SH 175.
On September 22, 1936, SH 175 was restored. On September 26, 1939, SH 59's route was changed to use SH 175, and the previous route of SH 59 became part of the new SH 175.