U.S. Route 321

U.S. Route 321 marker
U.S. Route 321
Map
US 321 highlighted in red
Route information
Auxiliary route of US 21
Length516.9 mi[1][2][3] (831.9 km)
Existed1931–present
Tourist
routes
Western York Scenic Byway
Major junctions
South end US 17 in Hardeeville, SC
Major intersections
North end I-40 / SR 73 / SR 95 near Lenoir City, TN
Location
CountryUnited States
StatesSouth Carolina, North Carolina, Tennessee
CountiesSC: Jasper, Hampton, Allendale, Bamberg, Orangeburg, Lexington, Richland, Fairfield, Chester, York
NC: Gaston, Lincoln, Catawba, Burke, Caldwell, Watauga, Avery
TN: Johnson, Carter, Washington, Greene, Cocke, Sevier, Blount, Loudon
Highway system


SC 319SC SC 322
US 311NC NC 343
SR 320TN SR 321

U.S. Route 321 (US 321) is a spur of U.S. Route 21. It runs for 516.9 miles (831.9 km) from Hardeeville, South Carolina to Lenoir City, Tennessee; with both serving as southern termini. It reaches its northernmost point at Elizabethton, Tennessee, just northeast of Johnson City. Because of its unusual "north–south–north" routing, U.S. Route 321 intersects both Interstate 40 and U.S. Route 70 three separate times. The highway serves different roles in each state: An alternate route to interstates in South Carolina, a major highway in North Carolina, and a scenic route in Tennessee.

  1. ^ "U.S. Route 321 in South Carolina" (Map). Google Maps. Retrieved December 22, 2013.
  2. ^ "U.S. Route 321 in North Carolina" (Map). Google Maps. Retrieved December 22, 2013.
  3. ^ "U.S. Route 321 in Tennessee" (Map). Google Maps. Retrieved December 22, 2013.