State Route 198 is a highway completely within Utah County

Utah County, Utah

Utah County is a county located in the U.S. state of Utah. As of 2000, the population was 368,536 and by 2008 was estimated at 530,837. It was named for the Spanish name for the Ute Indians. The county seat and largest city is Provo...

 in northern Utah

Utah

Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...

 that connects Santaquin

Santaquin, Utah

Santaquin is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 4,834 at the 2000 census, while the 2008 estimates placed it at 8,400.-Geography:...

 to Spanish Fork

Spanish Fork, Utah

Spanish Fork is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 31,497 as of the 2008 census estimate.-History:Spanish Fork was settled by LDS pioneers in 1851...

 via Payson

Payson, Utah

Payson is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 12,716 at the 2000 census. The current mayor is Rick Moore, who in the 2009 election was the first write-in candidate ever to defeat an incumbent mayor in...

 and Salem

Salem, Utah

Salem is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 4,372 at the 2000 census...

. The route runs sixteen miles. The entire length of the route is an old routing of US-6 and US-50

U.S. Route 50 in Utah

The Utah portion of U.S. Route 50, commonly abbreviated US-50, crosses the center of the state. The highway serves no major population centers in Utah, with the largest city along its path being Delta. Most of the route passes through desolate, remote areas. Through the eastern half of the state...

; a portion of the route was also US-91. These routes were re-aligned or truncated as and after the Interstate Highway System

Interstate Highway System

The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...

 was constructed through this part of Utah.

Route description

From its western terminus at Interstate 15

Interstate 15 in Utah

In the U.S. state of Utah, Interstate 15 runs north–south through the southwestern and central portions of the state, passing through many of the population centers of that state, including St. George, Provo, Salt Lake City, and Ogden, the latter three being part of the urban area known as...

 in Santaquin, the route heads north-northeast until reaching Payson, where it straightens out to the north. This portion of the route is 100 West in Payson. Soon after, the highway turns east on State Road. The highway veers northeast and eventually to the north-northeast until Spanish Fork, where it runs north again. The route turns east on Canyon Road, eventually turning to the southeast until reaching US-6, where it terminates.

History

The roads from Santaquin northeast to Spanish Fork and Spanish Fork southeast to Moark Junction were added to the state highway system in the early 1910s. In the 1920s, the former back part of SR-1 and US-91, and the latter part of SR-8 and US-89. The state route designation of the latter portion, which had since become signed as US-6, was changed from SR-8 to State Route 105 in 1945. With the construction of I-15 in the area, SR-1 was moved to the new Interstate in 1964, and the old route from Santaquin to Spanish Fork became an extension of SR-26, which was continued east to Moark Junction, replacing SR-105. The state legislature redesignated this as part of SR-27 in 1969, and in the 1977 renumbering the official state route designation was changed to SR-6, matching signage for US-6. The Utah Transportation Commission submitted a request for a realignment to the American Association of State Highway Officials (AASHTO) in 1994, moving US-6 onto I-15 and SR-214 in order to follow AASHTO policies for following the "shortest routes and the best roads". AASHTO approved this change in November, and in April 1995 the state officially moved US-6, with the old alignment becoming State Route 198.

Major intersections