South Carolina Highway 421
Encyclopedia
South Carolina Highway 421 (SC 421) is a highway
Highway
A highway is any public road. In American English, the term is common and almost always designates major roads. In British English, the term designates any road open to the public. Any interconnected set of highways can be variously referred to as a "highway system", a "highway network", or a...

 in Aiken County, South Carolina
Aiken County, South Carolina
Aiken County is a county located in the U.S. state of South Carolina. In 2000, its population was 142,552; in 2010, the U.S. Census Bureau estimated that its population had reached 160,099...

. It runs 10.5 miles (16.9 km) in length.

Route description

SC 421 begins where it splits off from the Jefferson Davis Highway
Jefferson Davis Highway
The Jefferson Davis Memorial Highway was a planned transcontinental highway in the United States in the 1910s and 1920s that began in Washington, D.C. and extended south and west to San Diego, California; it was named for Jefferson Davis, who, in addition to being the first and only President of...

 (U.S. Route 1/U.S. Route 78) near the city of North Augusta
North Augusta, South Carolina
North Augusta is a city in Aiken County, South Carolina, United States, on the north bank of the Savannah River. The population was 21,348 at the 2010 census. The city is included in the Central Savannah River Area and is also part of the Augusta, Georgia metropolitan area.- History :North...

, just south of an interchange with U.S. Route 278 and SC 125. The highway then heads northeast, paralleling the Jefferson Davis Highway, before intersecting SC 126 in the town of Clearwater
Clearwater, South Carolina
Clearwater is a census-designated place in Aiken County, South Carolina, United States. It lies near North Augusta, South Carolina, and is part of the Augusta, Georgia metropolitan area. Clearwater is located in historic Horse Creek Valley...

. In the town of Warrenville
Warrenville, South Carolina
Warrenville is an unincorporated community in Aiken County, South Carolina, United States, near Graniteville. It is part of the Augusta, Georgia metropolitan area...

, SC 421 intersects SC 191, then it turns more easterly, before ending back at the Jefferson Davis Highway, approximately four miles west of the city of Aiken
Aiken, South Carolina
Aiken is a city in and the county seat of Aiken County, South Carolina, United States. With Augusta, Georgia, it is one of the two largest cities of the Central Savannah River Area. It is part of the Augusta-Richmond County Metropolitan Statistical Area. Aiken is home to the University of South...

.

Major intersections

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