Route

• South End: Steinaker State Park boat ramp
• North End: Junction US 191, six miles north of Vernal

Route Notes:
The route description has not been updated in ant least twenty years; note that the northern end of the route is listed as Route 44. That route was renumbered as US 191 in 1979!

Route

• South End: Junction U-10, two miles north of Peoa, Summit County
• North End: Rockport campground

Route

• South End: Goblin Valley overlook
• North End: northern boundary of Goblin Valley State Park, connecting to Goblin Valley Road, an unnumbered Emery County road which connects U-24 to the state park

Route

• South End: Hyrum State Park
• North End: Junction U-101, in Hyrum

Route

• South End: East Canyon State Park parking lot
• North End: Junction U-66, a mile west of U-65

Route

• South End: southern boundary of Kodachrome Basin State Park, connecting to Cottonwood Canyon Road, an unnumbered Kane County Road which connects to U-12 at Cannonville, Garfield County.
• North End: at the end of the pavement inside the park

Route

• South End: Ferron Canyon Road, four miles west of U-10 in town of Ferron, Emery County
• North End: Millsite State Park parking lot

Route

• West End: Minersville State Park parking lot
• East End: Junction U-21, 14 miles west of Beaver

Route

• South End: US 40, just west of Duchesne
• North End: Starvation Lake State Park boat ramp

Route

• West End: Willard Bay south marina parking lot
• East End: Box Elder County's 2000 West Street, near 8700 South about two miles west of Hot Springs Junction

Route

• South End: Dead Horse Point State Park south parking lot
• North End: Junction US 191, nine miles north of Moab

Route Notes
Travelling from Dead Horse Point toward US 191 in the inventory direction, the highway heads north then west, then north, and then west, but the route is signed as an east/west route. The route itself mostly remains near 6000 feet in elevation atop a relatively flat terrain known as the Big Flat before descending rapidly via Sevenmile Canyon to meet US 191 at near the 4500 feet level.

Links
E-mile-by-mile route log

Junction List

Route

• South End: Junction US 189, eight miles southwest of Heber City
• North End: Deer Creek State Park boat ramp

Route

• West End: Willard Bay north unit parking area
• East End: Junction US 89 in Willard

Route

• South End: Goosenecks of the San Juan State Park
• North End: Junction U-261, one mile west of US 163

Route

• U-317 encompasses all of the parking lots and access roads at the UDOT complex on 2700 West near 4700 South in Salt Lake County.

Route

• South End: Junction U-9, four miles east of I-15
• North End: Entrance station to Quail Creek Reservoir State Park

Route

• West End: Junction US 40, at exit 8
• East End: Jordanelle Reservoir boat ramp

Route

• Camp Williams is located along U-68 bestride the Salt Lake / Utah county line

Route

• West End: Junction US 191, in Monticello
• East End: Colorado state line, connecting to US 491 in that state

Photos courtesy of Alan Hamilton

Route History
As one of the first paved roads in southeastern Utah, this route actually has a long history. Prior to World War II, the pavement now signed as US 491, as well as route 191 north to Crescent Junction, was numbered US 550. Later, that entire section was numbered US 160. Later, when US 191 was created, the portion left dangling east of Monticello was assigned as US 666.

FHWA Article about US 666 numbering.

Photos courtesy of Alan Hamilton

Route
This route was removed form the state highway system in Summer 2003, and replaced by US 491.

Route Notes
For nearly 30 years, from the mid-1970s until in ignimonious demise in the summertime of 2003, this route with a number from out of the book of Revelation, existed in the southeastern corner of Utah.

Actually the road got its number as a spur route from US 66, and when it was first created it ran from southern Arizona to Monticello, Utah. By the early 1990s, Arizona's Department of Transportation had tired of replacing route shields stolen from along the highway, and sought a new number for the road. The case was made easier because US 66, the route upon whose existence the numbering for 666 was based, had been deleted fifteen years earlier, in the late 1970s. Arizona chose US 191 as the new name for the state's portion of Route 666, between I-10 and I-40.

But the route remained untouched in the other three states through which it passed, New Mexico, Colorado, and Utah, until New Mexico Governor Bill Richardson latched on to the issue in late 2002. It would be cynical to suggest that his interest in changing the road's number was somehow connected to pandering to tribal votes in northwest New Mexico, and this author tries to keep politics out of these pages as much as possible. Sometimes, the issues of roads cross into the sphere of politics and this webmaster is forced to walk a delicate line.

In any case, by the summer of 2003, Gov. Richardson had convinced the necessary authorities in the various agencies and neighboring states, and US 666 disappeared from the map, becoming US 491.

Route History
As one of the first paved roads in southeastern Utah, this route actually had a long history. Prior to World War II, the pavement used by US 666, as well as route 191 north to Crescent Junction, was numbered US 550. Later, that entire section was numbered US 160.

FHWA Article about US 666 numbering.