[3][4] In 1934, WIS 135 was slightly truncated in favor of US 51's Packwaukee and Buffalo bypass.

[5][6] In 1939, WIS 135 was rerouted northward to directly connect to US 51/WIS 23.

[7][8] In 1948, the route then moved northward away from Wisconsin Dells, superseding CTH-H in the process.

[14][15] During its existence, no significant changes have been made to the routing.

[18][19] In 1990, the rest of the route was removed in favor of the realignment of WIS 106.