Utah State Route 12

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State Route 12 marker

State Route 12
A Journey Through Time Scenic Byway
Route information
Defined by Utah Code §72-4-107
Maintained by UDOT
Length: 122.863 mi[1] (197.729 km)
Existed: 1914 as a state highway; 1920s as SR-12 – present
Tourist
routes:
Utah's Scenic Byway 12 - A Journey Through Time
Major junctions
West end: US‑89 near Panguitch
  SR‑63 near Bryce Canyon
Hole in the Rock Rd. near Escalante
East end: SR‑24 near Torrey
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 state highway designated an All-American Road located in Garfield County and Wayne County, Utah, USA.

Route description[edit]

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 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.

Traffic volume[edit]

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.[2]

History[edit]

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 forest road.[3] The State Road Commission numbered the route to Bryce Canyon SR-12 in the 1920s,[4] and in 1927 the state legislature assigned it to both branches, to Bryce Canyon and Tropic,[5] 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,[6] and in 1935 it became part of SR-54.[7] Another road was also added to the state highway system in 1914, connecting SR-22 at Widtsoe with Escalante,[8] and it was numbered State Route 23 in 1927.[9] An extension took SR-23 northeast to Boulder in 1941,[10] and in 1947 SR-54 absorbed SR-23, with the Widtsoe-Escalante road dropped in favor of Henrieville-Escalante.[11] State Route 117, running southeast from SR-24 near Teasdale to Grover, became a state highway in 1931,[12] and was extended south to Boulder in 1957, becoming part of SR-54 in 1966.[13] 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 old SR-117 north of Grover.[3]

Major intersections[edit]

County Location Mile[1] km Destinations Notes
Garfield Bryce Canyon Junction 0.000 0.000 US‑89 – Panguitch, Kanab, Zion National Park
  10.713 17.241 East Fork of the Sevier Scenic Backway
Tropic Junction 13.598 21.884 SR‑63 / John's Valley Road – Bryce Canyon, Antimony Former SR-22
Cannonville 25.657 41.291 Cottonwood Canyon Scenic Backway – Kodachrome Basin State Park
  54.643 87.939 Main Canyon Road Former SR-23
Escalante 58.968 94.900 Smokey Mountain Scenic Backway
59.830 96.287 Posey Lake Scenic Backway
  64.392 103.629 Hole-in-the-Rock Scenic Backway
  83.270 134.010 Hell's Backbone Road
Boulder 86.352 138.970 Burr Trail Scenic Backway
Wayne   118.179 190.191 Teasdale Former SR-117
  122.863 197.729 SR‑24 – Loa, Hanksville
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]

Gallery[edit]

References[edit]

  1. ^ a b Utah Department of Transportation, Highway Reference Information: SR-12, updated 2008-05-01. Retrieved July 2008.
  2. ^ UDOT Traffic Counts, page 6
  3. ^ a b Utah Department of Transportation, Highway Resolutions: Route 12 PDF (9.72 MB), updated September 2007, accessed May 2008
  4. ^ State Road Commission, Utah State Trunk Lines, 1923
  5. ^ 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." 
  6. ^ 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." 
  7. ^ Utah State Legislature (1935). Chapter 37: Designation of State Roads. Session Laws of Utah. 
  8. ^ Utah Department of Transportation, State Route History. Retrieved July 2007.
  9. ^ Utah State Legislature (1927). Chapter 21: Designation of State Roads. Session Laws of Utah. "23. From Widtsoe easterly to Escalante." 
  10. ^ Utah State Legislature (1941). Chapter 34. Session Laws of Utah. 
  11. ^ 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." 
  12. ^ 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." 
  13. ^ Utah Department of Transportation, Highway Resolutions: Route 117 PDF (1.56 MB), updated November 2007, accessed May 2008

External links[edit]