Utah State Route 145

State Route 145 (SR-145), a majority of which is also known as Pioneer Crossing, is a 6.862-mile-long (11.043 km) 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 (I-15) and U.S. Route 89 (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.

State Route 145
Pioneer Crossing American Fork Main Street
SR-145 highlighted in red
Route information
Defined by Utah Code §72-4-120
Maintained by UDOT
Length	6.862 mi[1] (11.043 km)
Existed	1978[2]–present
Major junctions
West end	SR-73 in Saratoga Springs
	SR-68 in Saratoga Springs I-15 in American Fork
East end	US-89 in American Fork
Highway system
State highways in Utah Interstate US State Minor Scenic ← SR-144 SR-147 →

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 (DDI). The road continues east for about a half-mile and ends at an intersection with State Street (US-89).[3]

The entire route is included in the National Highway System.[4]

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 for the Mountain View Corridor. 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.[5][6] The DDI was the second to be opened in the United States, the first being in Missouri.[7] In June 2014, construction began to extend Pioneer Crossing northwest of SR-68 to SR-73.[8] The extension was completed on November 26, 2014.[9]

Major intersections

The entire route is in Utah County.

Location	mi[1]	km	Destinations	Notes
Saratoga Springs	0.000	0.000	SR-73 (Crossroads Boulevard)	Western terminus
	1.136	1.828	SR-68 (Redwood Road)	Continuous-flow intersection
American Fork	6.278	10.103	I-15 – Provo, Salt Lake City	Diverging diamond interchange
	6.862	11.043	US-89 (State Street)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

Template:Attached KML/Utah State Route 145

KML is from Wikidata

1. "Route 145" (PDF). Highway Reference. Utah Department of Transportation. December 2014. Retrieved July 17, 2015.
2. Utah Department of Transportation, Highway Resolutions: "Route 145". (623 KB), updated November 2008, accessed September 2010.
3. "Google Maps". Google.
4. "Utah National Highway System". UDOT Data Portal. Retrieved 2019-01-22.
5. Utah Department of Transportation, Pioneer Crossing - Project History, accessed 4 October 2010.
6. The Daily Herald, Pioneer Crossing opens, accessed July 17, 2015.
7. Utah Department of Transportation, Pioneer Crossing - Diverging Diamond Interchange, accessed 4 October 2010.
8. Utah Department of Transportation, SR-145; Pioneer Crossing Extension to SR-73, accessed July 17, 2015.
9. The Daily Herald, Pioneer Crossing extension opens early, accessed July 17, 2015.