State Route 23 is a state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 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...

, running for 29.89 miles (48.1 km) in Cache County from Wellsville

Wellsville, Utah

Wellsville is a city in Cache County, Utah, United States. The population was 3,432 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Wellsville is located at ....

 to the Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

 state line near Cornish

Cornish, Utah

Cornish is a town in Cache County, Utah, United States. The population was 288 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Cornish is located at ....

.

Route description

SR-23 begins in Wellsville at an intersection with US-89/US-91 in southern Wellsville and heads north through the town. It turns northwest parallel to the Wellsville Mountains

Wellsville Mountains

The Wellsville Mountains are located in northern Utah and are often considered part of the Wasatch Mountains. The mountains separate the Cache Valley from the Wasatch Front. Nearly all of the water collected by the Wellsville Mountains drains into the Bear River.While only moderately tall, they are...

 to Mendon

Mendon, Utah

Mendon is a city in Cache County, Utah, United States. The population was 1,282 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Mendon is located at ....

. It turns north through Mendon and Petersboro

Petersboro, Utah

Petersboro is a census-designated place in Cache County, Utah, United States. The population was 324 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:...

. It turns northwest between Cache Butte and the Cutler Reservoir into Cache Junction

Cache Junction, Utah

Cache Junction is a census-designated place in Cache County, Utah, United States. The population was 38 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:...

.

SR-23 then turns north through Cache Junction across the Bear River

Bear River (Utah)

The Bear River is a river, approximately long, in southwestern Wyoming, southeastern Idaho, and northern Utah, in the United States. The largest tributary of the Great Salt Lake, it drains a mountainous area and farming valleys northeast of the lake and southeast of the Snake River Plain...

 into Newton

Newton, Utah

Newton is a town in Cache County, Utah, United States. It was founded in 1869 by LDS Pioneers of The Church of Jesus Christ of Latter-day Saints. The population was 789 at the 2010 census...

. It turns east through the center of Newton, then turns north around Little Mountain through Trenton

Trenton, Utah

Trenton is a town in Cache County, Utah, United States. The population was 464 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Trenton is located at ....

, Morton, and Cornish

Cornish, Utah

Cornish is a town in Cache County, Utah, United States. The population was 288 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Cornish is located at ....

 to the state line. It continues as County Road D1 in Franklin County, Idaho

Franklin County, Idaho

Franklin County is a county located in the U.S. state of Idaho. As of the 2000 Census the county had a population of 11,329 . The county seat and largest city is Preston. Franklin County is part of the Logan, Utah-Idaho Metropolitan Statistical Area.Established in 1913, Franklin County was named...

.

History

The state legislature created SR-142 in 1933, connecting SR-69 (now SR-30) at Petersboro with Newton and Smithfield. SR-142 was moved to the present route to Clarkston in 1941, with the old alignment through downtown Newton to Smithfield becoming SR-218. State Route 164 was also defined in 1933, running south from Petersboro to US-91 in Wellsville. Two years later, State Route 192 was created, running north from SR-142 (now SR-218) east of Newton to SR-61 in Cornish. That part of SR-61 had been added in 1931, heading both east to Cove

Cove, Utah

Cove is a census-designated place in Cache County, Utah, United States. The population was 460 at the 2010 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area.-Geography:Cove is located at ....

 and north to Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

. In 1953, SR-164 and SR-192 were combined with SR-142 south of Newton, SR-218 through Newton, and SR-61 north of Cornish to create State Route 23.

Major intersections