It terminates at the intersection of Elk Avenue and 6th Street (the Four Way Stop) in Crested Butte.

The route was paved from its southern terminus to Paonia and from Almont to Gunnison by 1950.

SH 135 was split into two discontinuous sections in 1954 when the segment over Kebler Pass was turned back to Gunnison County.

The section between Hotchkiss and Bardine was renumbered in 1970 as an extension of SH 133, leaving what is left today.

Media related to Colorado State Highway 135 at Wikimedia Commons