Utah State Route 21

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State Route 21 marker

State Route 21
Route information
Defined by Utah Code §72-4-108
Maintained by UDOT
Length: 107.575 mi[1] (173.125 km)
Existed: 1910 as a state highway; 1927 as SR-21 – present
Major junctions
West end: SR 487 at the Nevada border toward Ely
  SR-159 near Garrison
SR-257 near Milford
SR-130 near Minersville
SR-310 near Minersville
East end: SR-160 / I-15 Bus. in Beaver
Highway system
  • State highways in Utah
SR-20 SR-22

State Route 21 (SR-21) is a state highway in western Utah, running for 107.575 miles (173.125 km) in Millard and Beaver Counties from the Nevada state line near Garrison to Beaver.

Route description[edit]

View east from the west end of SR-21 at the Nevada state line

SR-21 begins at the Nevada state line as a continuation of Nevada State Route 487 and heads southeast through Garrison. It continues southeast past Pruess Lake and continues through Mormon Gap and Halfway Summit. It turns east around Lime Point into Corral Canyon and over Wah Wah Summit. It then heads southeast between Grampian Hill and Squaw Peak into Squaw Gulch, where it turns northeast over Frisco Summit and east through the ghost town of Frisco. It then turns southeast and continues to Milford. SR-21 leaves Milford heading southeast across an agricultural area to Minersville. In Minersville, it turns east past Yellow Mountain, then turns northeast past Minersville Lake State Park. It continues through Adamsville, then turns east around Little Bald Hill through Greenville into Beaver. In Beaver, it crosses I-15 without an interchange, the continues to end at an intersection with Business Loop I-15 (SR-160).[1]


The road from SR-1 (by 1926 US-91, now SR-160) in Beaver west to Milford was added to the state highway system in 1910, and it was extended west to Newhouse in 1916.[2] The state legislature assigned the SR-21 designation to the route in 1927, and continued it northwest from Newhouse to the Nevada state line, where it became SR 73 towards Ely.[3] In 1941, SR-21 was extended east from Beaver to US-89 at Junction,[4] but this became SR-153 in 1945.[5]

Major intersections[edit]

County Location mi[1] km Destinations Notes
Millard Garrison 0.000 0.000 SR 487 north to US 6 / US 50 Western terminus
1.025 1.650 SR-159 north
Beaver Milford 76.920 123.791 SR-257 north (Main Street)
Minersville 90.498 145.642 SR-130 south (Center Street)
96.432 155.192 SR-310 north
Beaver 107.575 173.125 SR-160 (Main Street) / I-15 Bus. Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c UDOT Highway Reference, SR-21
  2. ^ Utah Department of Transportation, Highway Resolutions: "Route 21".  (0.99 MB), updated September 2007, accessed May 2008
  3. ^ Utah State Legislature (1927). Chapter 21: Designation of State Roads. Session Laws of Utah. 21. From Beaver westerly via Milford, Newhouse and Garrison to the Nevada State line; also from Beaver easterly to Puffer's lake. 
  4. ^ Utah State Legislature (1941). Chapter 34. Session Laws of Utah. Route 21. From Beaver westerly via Milford, Frisco and Garrison to the Utah-Nevada state line; also from Beaver easterly via Puffer's Lake to junction with route 11 at Junction City. 
  5. ^ Utah State Legislature (1945). Chapter 61: State Roads and Routes. Session Laws of Utah. Route 153. From Beaver on route 1 easterly via Puffer Lake to Junction City on route 11. 

External links[edit]

Route map: Google

KML is not from Wikidata

Media related to Utah State Route 21 at Wikimedia Commons