Utah State Route 201 to connect to North Temple). In 1939, the state legislature designated State Route 201, running west on 2100 South from State Street (US-40/US-91) to US-50 (9180 West) in Magna. By 1954, US-50 was moved south to an alignment through central Utah, the old routing mostly replaced by US-50 Alternate (US-50A). However, US-50A was placed in Salt Lake City on 2100 South west of State Street, replacing the SR-201 designation. By 1965, US-40 was realigned along Foothill Drive (then US-40A), the Utah Highway Department believing the Foothill route was more direct in connecting with North Temple toward the airport. US-40A was
Utah State Route 106 the part from southern Layton north to Utah Hot Springs as SR-84. On March 7, 1969, the Utah State Department of Highways (now the Utah Department of Transportation) added Shepard Lane in northern Farmington to the state highway system, from SR-106 west to US-89 (SR-49). SR-106 was rerouted over this roadway, ending at US-89, in order to eliminate a hazardous intersection where US-89 and SR-106 had crossed. The former SR-106 was renumbered SR-272 south of and SR-273 north of this intersection. The old alignment north of Shepard Lane, where still state-maintained, has since become SR-273, SR-126, SR-26, and US-89. As