The route was completely paved by 1958. The section between Hotchkiss and Bardine was renumbered in 1970 as an extension of SH 133, leaving what is left today.
By 1958, the entire road was completed. In 1970, a portion of the route between Hotchkiss and Bardine was reassigned to become part of SH 133, leading to the current state of the road.