State Route 145 (SR-145), a majority of which is also known as Pioneer Crossing, is a west–east thoroughfare completely within

Utah County Utah County is the second-most populous county in the U.S. state of Utah. The county seat and largest city is Provo, which is the state's third-largest city, and the largest outside of Salt Lake County. As of the 2020 United States Census, the ...

in northern

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...

that cuts through

Saratoga Springs Saratoga Springs is a city in Saratoga County, New York, United States. The population was 28,491 at the 2020 census. The name reflects the presence of mineral springs in the area, which has made Saratoga a popular resort destination for over ...

, Lehi, American Fork, and portions of unincorporated Utah County. The portion between

Interstate 15 Interstate 15 (I-15) is a major Interstate Highway in the western United States, running through Southern California and the Intermountain West. I-15 begins near the Mexican border in San Diego County and stretches north to Alberta, Cana ...

(I-15) and

U.S. Route 89 U.S. Route 89 (US 89) is a north–south United States Numbered Highway with two sections, and one former section. The southern section runs for from Flagstaff, Arizona, to the southern entrance of Yellowstone National Park. The northern section ...

(US-89) has been under state jurisdiction since 1978, while the roadway between SR-68 and I-15 (the section named Pioneer Crossing) opened in 2010. The road (and Pioneer Crossing name) 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 (including the interchange) 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 (on Lehi's grid) then becomes American Fork Main Street just prior to where it meets I-15 at a

diverging diamond interchange A diverging diamond interchange (DDI), also called a double crossover diamond interchange (DCD), is a subset of diamond interchange in which the opposing directions of travel on the non-freeway road cross each other on either side of the inte ...

(DDI). The road continues east for about a half-mile and ends at an intersection with State Street (US-89). The entire route is included in the National Highway System.

History

State maintenance of Main Street in American Fork (from I-15 to US-89) was established in May 1978, the state legislature approving that the following year. By 2003, a concept of a connector between Redwood Road (SR-68) and I-15 was presented in an

environmental impact study Environmental Impact assessment (EIA) is the assessment of the environmental consequences of a plan, policy, program, or actual projects prior to the decision to move forward with the proposed action. In this context, the term "environmental imp ...

for the

Mountain View Corridor The Mountain View Corridor is a freeway under construction in northern Utah that will run along the western periphery of Salt Lake County and south into northwest Utah County. Except for the last several miles on its southern end the Mountain Vi ...

. After a separate study was completed in 2008, plans to construct the connector were set in place. As part of a project to reconstruct over twenty miles of I-15 through Utah County, the present interchange at Main Street was set to be rebuilt as a diverging diamond interchange (DDI). Construction began in early 2009, with the road opening to traffic between US-89 and SR-68 on August 23, 2010.

Utah Department of Transportation The Utah Department of Transportation (UDOT) is an agency of the state government of Utah, United States; it is usually referred to by its initials UDOT (pronounced "you-dot"). UDOT is charged with maintaining the more than of roadway that co ...

Pioneer Crossing - Project History
accessed 4 October 2010.

The Daily Herald ''Herald'' or ''The Herald'' is the name of various newspapers. ''Herald'' or ''The Herald'' Australia * ''The Herald'' (Adelaide) and several similar names (1894–1924), a South Australian Labor weekly, then daily * '' Barossa and Light Heral ...

Pioneer Crossing opens
accessed July 17, 2015. The DDI was the second to be opened in the United States, the first being in

Missouri Missouri is a state in the Midwestern region of the United States. Ranking 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas t ...

Pioneer Crossing - Diverging Diamond Interchange
accessed 4 October 2010. In June 2014, construction began to extend Pioneer Crossing northwest of SR-68 to SR-73.

SR-145; Pioneer Crossing Extension to SR-73
accessed July 17, 2015. The extension was completed on November 26, 2014.

Pioneer Crossing extension opens early
accessed July 17, 2015.

Major intersections

References

External links

* {{DEFAULTSORT:State Route 145

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145 American Fork, Utah Lehi, Utah