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 198 Association of State Highway Officials (AASHTO) in 1994, moving US-6 onto I-15 and SR-214 in order to follow AASHTO policies for following the "shortest routes and the best roads". AASHTO approved this change in November, and in April 1995 the state officially moved US-6, with the old alignment becoming State Route 198. Utah State Route 198 State Route 198 is a highway completely within Utah County in northern Utah that connects Santaquin to Spanish Fork via Payson and Salem. The route runs . The entire length of the route is an old routing of US-6 and US-50; a portion of