South Carolina Highway 421 (SC 421) is a primary state highway in the U.S. state of South Carolina. It is an alternate route to US 1/US 78 between Aiken and Augusta, Georgia.
SC 421 begins where it splits off from the US 1/US 78 (Jefferson Davis Highway) west of North Augusta; it immediately connecting with US 278/SC 125 (Atomic Road). Heading northeast, it parallels US 1/US 78 to its south, going through the towns of Clearwater, Burnettown, Langley, Gloverville and Warrenville. Upon entering Aiken, it reconnects with US 1/US 78. Majority of the highway is four-lanes that travels a total of 10.5 miles (16.9 km).
Established by 1952 as a renumbering of US 1/US 78, which was realigned onto new four-lane routing just north of it. The route has remained unchanged since inception.
The entire route is in Aiken County.
- ^ a b South Carolina Department of Transportation: Statewide Highways 2012. Specifics: . Files: .
- ^ Google Maps (2010). South Carolina Highway 421 (Map). Cartography by Google. http://maps.google.com/maps?f=d&source=s_d&saddr=Jefferson+Davis+Hwy%2FUS-1+N%2FUS-278+E%2FUS-78+E&daddr=S+Carolina+421+N%2FPoplar+St+to:Augusta+Rd%2FSC-421+to:Augusta+Rd%2FSC-421+to:33.562154,-81.77565&geocode=FQr8_gEd7O4d-w%3BFZAo_wEdhIAe-w%3BFf6C_wEdBk4f-w%3BFcoVAAIdWC0g-w%3B&hl=en&mra=dme&mrcr=0&mrsp=4&sz=19&via=1,2,3&sll=33.562205,-81.775446&sspn=0.000865,0.002401&ie=UTF8&ll=33.528803,-81.835098&spn=0.110758,0.307274&t=h&z=12.
- ^ South Carolina Department of Transportation (1940) (PDF). General Highway Map, Aiken County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/26/rec/1. Retrieved September 8, 2013.
- ^ South Carolina Department of Transportation (1956) (PDF). General Highway Map, Aiken County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/90/rec/2. Retrieved September 8, 2013.
Route map: Google / Bing