 In 1931, the state legislature added State Route 68 to the state highway system.It followed Redwood Road from US-40 (North Temple Street) south to the present SR-73 and then used SR-73 east to US-50/US-89/US-91 (now solely US-89) in Lehi.The state added 900 West and Warm Springs Road from US-40 north to US-89/US-91 at Becks as SR-153 in 1933.