Utah State Route 145
State Route 145 , a majority of which is also known as Pioneer Crossing, is a west-east thoroughfare completely within Utah County in northern Utah that cuts through Saratoga Springs, Lehi, American Fork, and portions of unincorporated Utah County. The portion between Interstate 15 and U.S. Route 89 has been under state jurisdiction since 1978, while the roadway between SR-68 and I-15 opened in 2010. The road were extended from SR-68 to SR-73 in 2014. The road runs mostly parallel to and south of SR-73, which also connects to SR-68 and I-15. The original portion of the route between I-15 and US-89 is designated as Main Street in American Fork's street grid.
Route description
Commencing from the route's western terminus in northern Saratoga Springs, SR-145 heads southeast as Pioneer Crossing with two lanes in each direction, divided by a center turn lane. The road turns east just prior to the intersection with SR-68, then crosses over the Jordan River. The route then takes a brief northeasterly turn before returning due east, and passing through a rural area of western Utah County before entering a stretch of development past 2300 West. The highway turns southeast to avoid development before again turning northeast and east. The road gains a third lane in each direction past 300 East then becomes American Fork Main Street just prior to where it meets I-15 at a diverging diamond interchange. The road continues east for about a half-mile and ends at an intersection with State Street.The entire route is included in the National Highway System.