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 146 creating Utah State Route 129 on December 5, 2014. Utah State Route 146 State Route 146 (SR-146) was a state highway in the U.S. state of Utah that connected the city of Pleasant Grove with SR-92 at the mouth of American Fork Canyon, some to the north in Utah County. Route 146 started in Pleasant Grove at the intersection of 100 East and State Street US-89. Travelling north on 100 East, the route left Pleasant Grove, turns into Canyon Road, and traveled along the eastern foothills of Cedar Hills, Utah until it ended at the Alpine Loop Scenic Byway at