Utah State Route 12

From the AARoads Wiki: Read about the road before you go
Jump to navigation Jump to search

State Route 12

A Journey Through Time Scenic Byway
SR-12 highlighted in red
Route information
Defined by Utah Code §72-4-107
Maintained by UDOT
Length122.863 mi[1] (197.729 km)
Existed1914 as a state highway; 1920s as SR-12–present
Utah's Scenic Byway 12 - A Journey Through Time
RestrictionsPilot car and/or police escorts required for vehicles wider than 10 feet (3.0 m). Advance notice and permit required for vehicles over 13 feet (4.0 m) high.[2]
Major junctions
West end US 89 near Panguitch
Major intersections
East end SR-24 near Torrey
CountryUnited States
CountiesGarfield, Wayne
Highway system
  • Utah State Highway System
SR-10 SR-13

State Route 12 or Scenic Byway 12 (SR-12), also known as "Highway 12 — A Journey Through Time Scenic Byway", is a 122.863-mile-long (197.729 km) state highway designated an All-American Road located in Garfield County and Wayne County, Utah, United States.

Route description

SR-12, as seen from the Head of the Rocks overlook

Proceeding west to east for 122 miles (nearly 200 km), the highway starts south of Panguitch at an intersection with US-89, crosses part of Dixie National Forest and Bryce Canyon National Park, continues through the small towns of Tropic, Cannonville, and Henrieville. It crosses various parts of Grand Staircase–Escalante National Monument (GS-ENM), continues northeast through Escalante and over the Escalante River, then over the Hogback,[3] a narrow ridge with no guardrails or shoulders and steep drop-offs on each side. It then proceeds north through more of GS-ENM, Boulder, the Aquarius Plateau, Grover, ending in Torrey at an intersection with SR-24, five miles (8 km) west of Capitol Reef National Park. The 30-mile (48 km) long portion of the highway that ascends and descends Boulder Mountain on the Aquarius Plateau is known as Boulder Mountain Highway.

The segment of SR-12 between the US-89 and SR-63 junctions is part of the National Highway System.[4]

Traffic volume

The Average Daily Traffic (AADT) on SR-12 is at its greatest at its western junction with US-89, where the count for 2005 was 2,430. At its other end, at the junction with SR-24, the traffic bottoms out at 435.[5]


Red Canyon, Dixie National Forest

The road from Bryce Canyon Junction to Tropic was added to the state highway system in 1914, and in 1923 a branch from Tropic Junction to Bryce Canyon was built as a w:forest road.[6] The State Road Commission numbered the route to Bryce Canyon SR-12 in the 1920s,[7] and in 1927 the state legislature assigned it to both branches, to Bryce Canyon and Tropic,[8] but split off the branch to Tropic as State Route 54 in 1931. That same year, a new State Route 120 was created, continuing the road from Tropic to Henrieville,[9] and in 1935 it became part of SR-54.[10] Another road was also added to the state highway system in 1914, connecting SR-22 at Widtsoe with Escalante,[11] and it was numbered State Route 23 in 1927.[12] An extension took SR-23 northeast to Boulder in 1941,[13] and in 1947 SR-54 absorbed SR-23, with the Widtsoe-Escalante road dropped in favor of Henrieville-Escalante.[14] State Route 117, running southeast from SR-24 near Teasdale to Grover, became a state highway in 1931,[15] and was extended south to Boulder in 1957, becoming part of SR-54 in 1966.[16] In 1969, SR-54 became part of SR-12, but most of former SR-117 was dropped, leaving SR-12 to stretch from Bryce Canyon Junction to the north limit of Boulder (at the Dixie National Forest boundary), with a short spur to Bryce Canyon. This spur became a new SR-63 in 1975, and in 1985 the route was extended back north from Boulder to SR-24, using a different route than the old SR-117 north of Grover.[6]

Major intersections

GarfieldBryce Canyon Junction0.0000.000 US 89 – Panguitch, Kanab, Zion National Park
10.71317.241East Fork of the Sevier Scenic Backway
Tropic Junction13.59821.884 SR-63 / John's Valley Road – Bryce Canyon, AntimonyFormer SR-22
Cannonville25.65741.291Cottonwood Canyon Scenic Backway – Kodachrome Basin State Park
54.64387.939Main Canyon RoadFormer SR-23
Escalante58.96894.900Smokey Mountain Scenic Backway
59.83096.287Posey Lake Scenic Backway
64.392103.629Hole-in-the-Rock Scenic Backway
83.270134.010w:Hell's Backbone Road
Boulder86.352138.970Burr Trail Scenic Backway
Wayne118.179190.191TeasdaleFormer SR-117
122.863197.729 SR-24 – Loa, Hanksville
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also



  1. ^ a b "Highway Reference Online - SR-12". Utah Department of Transportation. Jan 10, 2017. Retrieved September 16, 2021.
  2. ^ "Secondary Highways with Additional Restrictions" (PDF). Utah Department of Transportation - Motor Carrier Division. April 20, 2020. Archived from the original on April 10, 2009.
  3. ^ Long, Denise. PULL OVER! Roadside Attractions From Reno To Denver. Lulu.com. p. 12. ISBN 9781312241626.
  4. ^ "Utah National Highway System". UDOT Data Portal. Retrieved January 23, 2019.
  5. ^ "Traffic Statistics". Utah Department of Transportation. 2005.
  6. ^ a b "State Road Resolutions SR-12.pdf". Utah Department of Transportation. (9.72 MB), updated September 2007, accessed May 2008
  7. ^ State Road Commission, Utah State Trunk Lines, 1923
  8. ^ Utah State Legislature (1927). "Chapter 21: Designation of State Roads". Session Laws of Utah. 12. From Hillsdale, about 7 miles south of Panguitch, southeasterly via Tropic Junction; to Bryce Canyon; also from Tropic Junction to Tropic.
  9. ^ Utah State Legislature (1931). "Chapter 55: Designation of State Roads". Session Laws of Utah. (54) From Tropic junction on route 12 to Tropic." "(120) From Tropic southerly via Cannonville to Henrieville.
  10. ^ Utah State Legislature (1935). "Chapter 37: Designation of State Roads". Session Laws of Utah.
  11. ^ Utah Department of Transportation, State Route History Archived 2007-02-25 at the Wayback Machine. Retrieved July 2007.
  12. ^ Utah State Legislature (1927). "Chapter 21: Designation of State Roads". Session Laws of Utah. 23. From Widtsoe easterly to Escalante.
  13. ^ Utah State Legislature (1941). "Chapter 34". Session Laws of Utah.
  14. ^ Utah State Legislature (1947). "Chapter 49". Session Laws of Utah. Route 54. From Tropic Junction on route 12 via Tropic, Cannonville, Henrieville, and Escalante to Boulder.
  15. ^ Utah State Legislature (1931). "Chapter 55: Designation of State Roads". Session Laws of Utah. (117) From junction with route 24 east of Bicknell, southerly via Teasdale to Grover.
  16. ^ "State Road Resolutions SR-117.pdf". Utah Department of Transportation. (1.56 MB), updated November 2007, accessed May 2008

External links