State Route 18 (SR-18) is a state highway in southern

Utah Utah is a landlocked state in the Mountain states, Mountain West subregion of the Western United States. It is one of the Four Corners states, sharing a border with Arizona, Colorado, and New Mexico. It also borders Wyoming to the northea ...

, running for in

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

and Iron Counties from

St. George Saint George (;Geʽez: ጊዮርጊስ, , ka, გიორგი, , , died 23 April 303), also George of Lydda, was an early Christian martyr who is venerated as a saint in Christianity. According to holy tradition, he was a soldier in the ...

to Beryl Junction. It forms part of the Legacy Loop Highway from St. George to Parowan. The highway closely follows the route of the Old Spanish Trail through

Dixie National Forest Dixie National Forest is a United States National Forest in Utah with headquarters in Cedar City. It occupies almost two million acres (8,000 km2) and stretches for about across southern Utah. The largest national forest in Utah, it ...

Route description

St. George to Veyo

SR-18 begins at Convention Center/Sunland Drive just south of the Bluff Street interchange with

I-15 I15 may refer to: * Interstate 15, a north–south Interstate Highway in the United States of America * Polikarpov I-15, a Soviet fighter aircraft * I15 (band), a band * , of the Imperial Japanese Navy * Älvsborg Regiment The Älvsborg Regiment ...

in St. George as an urban arterial and heads north through the west side of downtown St. George. After passing Sunset Boulevard ( SR-8), the route has an

inverted single-point urban interchange A single-point urban interchange (SPUI, or ), also called a single-point interchange (SPI) or single-point diamond interchange (SPDI), is a type of highway interchange. The design was created in order to help move large volumes of traffic t ...

with Snow Canyon Parkway/Red Hills Parkway. The route has a

dumbbell interchange The dumbbell, a type of free weight, is a piece of equipment used in weight training. It is usually used individually and/or in pairs, with one in each hand. History The forerunner of the dumbbell, halteres, were used in ancient Greece as li ...

at Ledges Parkway as it continues north, passing through Snow Canyon State Park. SR-18 continues northwest through Wide Canyon to Dammeron Valley and past Veyo Volcano. It then turns north into Veyo, running through the center of the town. This segment of SR-18 (between I-15 and Veyo) is listed as part of the National Highway System.

Veyo to Beryl Junction

SR-18 leaves Veyo heading northeast to Central, then continues north and northwest through mountainous terrain in the

past the Mountain Meadows Massacre site and continues into

Enterprise Enterprise (or the archaic spelling Enterprize) may refer to: Business and economics Brands and enterprises * Enterprise GP Holdings, an energy holding company * Enterprise plc, a UK civil engineering and maintenance company * Enterpris ...

. It turns northeast in eastern Enterprise, then turns north through farmland outside of the town to Beryl Junction, where it ends at an intersection with SR-56.

History

The highway closely follows the route of the Old Spanish Trail through the extreme corner of southwestern Utah. This portion of the trail is known for the 1857

Mountain Meadows massacre A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher t ...

, a controversial event in both

and

Mormon Mormons are a religious and cultural group related to Mormonism, the principal branch of the Latter Day Saint movement started by Joseph Smith in upstate New York during the 1820s. After Smith's death in 1844, the movement split into several ...

history which occurred just off what is now SR-18. The road from SR-1 (by 1926 US-91) at Enterprise Junction north through

Modena Modena (, ; ; ; ; ) is a city and ''comune'' (municipality) on the south side of the Po Valley, in the Province of Modena, in the Emilia-Romagna region of northern Italy. It has 184,739 inhabitants as of 2025. A town, and seat of an archbis ...

was added to the state highway system in 1918. , updated September 2007, accessed May 2008 A 1927 law gave it the number and extended it west to the

Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...

state line, where it became SR 25 to Panaca. In 1935, the portion from Beryl Junction west to Nevada became an extension of SR-56, which ran east from Beryl Junction to

Cedar City Cedar City is the largest city in Iron County, Utah, United States. Located south of Salt Lake City, it is north of Las Vegas on Interstate 15 in Utah, Interstate 15. Southern Utah University is located in Cedar City. It is the home of the Ut ...

. A branch from Enterprise west to Nevada, where SR 75 continued as a shortcut to Panaca, was added to SR-18 in 1941, but split off as SR-120 in 1945. At the southern end of the route, SR-18 was extended over US-91 in 1969 toward future I-15 (which was replacing US-91), putting the south end at SR-34, at the modern intersection of Bluff Street and St. George Blvd in

. A further extension to I-15 at exit 6 was made in 1974, replacing the south half of SR-34.

Major intersections

References

External links

{{DEFAULTSORT:State Route 018

018 018 may refer to: *Air Canada Flight 018, an airline flight from Hong Kong to Vancouver, Canada, illegally boarded by a Chinese man wearing a disguise in 2010 *Area code 018, a telephone area code in Uppsala, Sweden *BMW 018, an experimental turboj ...

Mountain Meadows Massacre 018 018