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U.S. Route 21 Route information Length: 391 mi[2][3][4] (629 km) Existed: 1926[1] – present Major junctions South end: Hunting Island State Park, SC   I-95 near Yemassee, SC I-26 (three times in SC) I-20 in Columbia, SC I-77 (numerous times in SC/NC) I-85 in Charlotte, NC I-40 in Statesville, NC North end: I-81 / US 52 in Wytheville, VA Highway system United States Numbered Highways List • Bannered • Divided • Replaced ← I-20 SC SC 22 → ← NC 20 NC NC 22 → ← SR 20 VA SR 22 → U.S. Route 21 is an north–south United States highway that runs for 391 miles (629 km) from Hunting Island State Park, South Carolina to Wytheville, Virginia. Contents 1 Route description 1.1 South Carolina 1.2 North Carolina 1.3 Virginia 2 Junction list 2.1 South Carolina 2.2 North Carolina 2.3 Virginia 3 History 4 Bannered routes 4.1 South Carolina business loops 4.2 North Carolina business loop 5 See also 6 Related U.S. routes 7 References Route description South Carolina US 21 begins at Hunting Island State Park, at the intersection of a walking trail (formally a road); the road does continue south to Fripp Island. The route goes east to Beaufort, where it widens to 4-lane, continuing to Yemassee, where it goes converts back to a rural 2-lane road. The route does a bypass north around Orangeburg, continuing afterward as a straight rural 2-lane road. Near Gaston, US 21 joins with US 321, becoming an urban highway through the cities of Cayce, West Columbia, and Columbia (passing near the state capital building). In north Columbia, US 21 splits from US 321, to revert back into the rural 2-lane road, as it parallels I-77. In York County, US 21 becomes urban again, connecting the cities of Rock Hill and Fort Mill. Near the North Carolina state line, US 21 merges with I-77, near Carowinds, then enters North Carolina. US 21 travels 231.5 miles (372.6 km) through the state, most of the time as a 2-lane rural road; most sections can be skipped by interstate. North Carolina US 21 begins as a concurrency with I-77, which it will repeat three times within the state. Its first break-out from I-77 is along Statesville Avenue, going through the towns of Huntersville and Cornelius, however, because its close proximity to I-77 and NC 115, it is ignored by Interstate 485. The second break-out happens in Mooresville, where it goes through the city then goes northwest into Statesville. After Statesville, it goes northeast to Harmony and Brooks Crossroads, before merging back with I-77 near Jonesville. North of Elkin, it splits with I-77 for the last time and goes north to Sparta, passing the Blue Ridge Parkway after a major curvy section of the road. North of Sparta, at Twin Oaks, US 221 overlaps with US 21 before entering Virginia. US 21 travels 124.5 miles (200.4 km) through the western Piedmont of North Carolina, either combined with I-77 or as a 2-lane rural road; from the South Carolina state line to Elkin, travelers can easily skip a majority of US 21 via I-77. Virginia After a few miles crossing the state line, US 21 reaches the town of Independence, where it splits with US 221 and continues north. The route goes through the Mount Rogers National Recreation Area before entering the city of Wytheville. After a short concurrency with US 11 in downtown Wytheville, it goes north and ends at the intersection of I-81/US 52. US 21 travels 35 miles (56 km) through western Virginia, mostly as a 2-lane rural mountain road. Junction list Mileposts reset at state line crossings. South Carolina County Location Mile[2] # Destinations Notes Beaufort 0 Hunting Island State Park US 21 begins at intersection of walking trail, road continues south to Fripp Island Beaufort 14.5 US 21 Bus. north / SC 802 east East end of SC 802 overlap 17 SC 802 west (Ribaut Road) West end of SC 802 overlap 20.5 US 21 Bus. south (Boundary Street) 24 SC 170 south – Burton 27 SC 116 west – Laurel Bay 34.5 US 17 north (Charleston Highway) – Charleston North end of US 17 overlap 41 US 17 south / US 17 Alt. north – Ridgeland, Yemassee South end of US 17 and US 17 Alt overlap Hampton Yemassee 45 SC 62 west (Yemassee Highway) – Varnville, Hampton Colleton 48.5 US 17 Alt. north (Hendersonville Highway) – Walterboro North end of US 17 Alt overlap 51 I-95 – Florence, Savannah 61 SC 63 (Sniders Highway) – Varnville, Walterboro 67.5 SC 64 (Bells Highway) – Ehrhardt, Walterboro Smoaks 76 SC 217 (Lodge Highway) – Lodge Bamberg 82 SC 61 (Edisto River Road) – Bamberg Orangeburg Branchville 88 US 78 – Bamberg, Charleston Brief .2 miles (0.32 km) concurrency 88.5 SC 210 north – Bowman Orangeburg 103.8 US 21 Bus. north (Rowesville Road) 104 US 178 east (Charleston Highway) / US 178 Bus. – Summerville, Charleston East end of US 178 overlap 105 US 301 (Five Chop Road) – Santee 106 SC 33 (Russel Street) – Cameron 107 US 601 (Magnolia Street) – St. Matthews 108 US 178 (Chestnut Street) / US 21 Bus. (Columbia Road) – North West end of US 178 overlap Calhoun 120 SC 6 south (Cawcaw Road) / SC 172 west (Bull Swamp Road) – St. Matthews, North South end of SC 6 overlap 122 SC 6 north (Center Hill Road) – Swansea North end of SC 6 overlap Lexington 127 I-26 – Columbia, Charleston Calhoun 130 US 176 east (Old State Road) – St. Matthews East end of US 176 overlap Lexington 137 I-26 – Columbia, Charleston 138 US 321 south – Gaston, Swansea South end of US 321 overlap Cayce 141 To I-77 (Fish Hatchery Road) – Charlotte 141.5 I-26 – Charleston, Spartanburg 142.5 SC 2 north (Frink Road) West Columbia 144 SC 302 south (Airport Boulevard) – Aiken, Columbia Metropolitan Airport 146 SC 2 (State Street) Richland Columbia 147 US 1 / US 378 (Gervais Street) To South Carolina State House 147.5 SC 12 (Hampton/Tylor Streets) To Finlay Park and Columbia Museum of Art 148 I-126 west / US 76 west – Greenville, Spartanburg West end of US 76 overlap 148.5 US 76 east (Elmwood Avenue) East end of US 76 overlap 149 US 176 west (River Drive) West end of US 176 overlap 150 SC 16 (Sunset Drive) 151 SC 215 north (Montichello Road) To Columbia International University 152 US 321 north (Fairfield Street) North end of US 321 overlap, Columbia College at intersection 154 I-20 – Florence, Augusta 161 I-77 – Columbia, Charlotte 161 SC 555 (Farrow Road) – Columbia Fairfield Ridgeway 171 SC 34 – Lugoff, Camden, Winnsboro Mills Brief .2 miles (0.32 km) concurrency 188 SC 200 – Winnsboro South end of SC 200 overlap Chester Great Falls 191 SC 99 north (Chester Avenue) – Richburg 192 SC 97 / SC 200 north – Chester, Lancaster North end of SC 200 overlap, brief .1 miles (0.16 km) concurrency with SC 97 Fort Lawn 200 SC 9 (Chester Avenue) – Richburg, Lancaster 205 SC 223 (Wylies Mill Road) – Richburg York Lesslie 212 SC 5 south – Lexington South end of SC 5 overlap; to Andrew Jackson State Park Rock Hill 216 Springfield Road – Lesslie Exit ramps not clearly marked 217 I-77 – Columbia, Charlotte 217.5 US 21 Bus. north / SC 5 north (Main Street) North end of SC 5 overlap 218 SC 121 south (Cowan Road) South end of SC 121 overlap 219 SC 122 (Dave Lyle Boulevard) 221 US 21 Bus. south (Cherry Road) / SC 121 North end of SC 121 overlap 222 I-77 / SC 161 west (Celanese Road) – Columbia, Charlotte Fort Mill 223.5 US 21 Bus. north (Spratt Street) 225 SC 160 229 US 21 Bus. south (Old Nation Road) 230 SC 51 north (Pineville-Rock Hill Road) – Pineville 230.5 I-77 south / Carowinds Boulevard – Columbia South end of I-77 overlap; to Carowinds US 21 overlaps with Interstate 77 (exits 90 to North Carolina state line) North Carolina County Location Mile[3] # Destinations Notes Mecklenburg Charlotte US 21 overlaps with Interstate 77 (South Carolina state line to exit 16) 16 I-77 north – Statesville North end of I-77 overlap 16.5 NC 155 north (Old Statesville Road) 19 NC 24 (W.T. Harris Boulevard) Huntersville 25.5 NC 73 (Sam Fur Road) – Concord Cornelius 25.5 I-77 south – Charlotte South end of I-77 overlap US 21 overlaps with Interstate 77 (exits 28 to 33) Iredell Mooresville 33.5 I-77 north – Statesville North end of I-77 overlap 36.5 NC 150 (Plaza Drive) 36.5 NC 155 south (Statesville Highway) South end of NC 155 overlap 43 I-77 – Charlotte, Statesville Statesville 51 US 70 (Garner Bagnal Boulevard) – Conover, Salisbury 52 US 64 west (Front Street) / NC 90 west (Water Street) / NC 115 north (Center Street) US 21 zig-zags through downtown Statesville; west end of US 64 overlap, north end of NC 115 overlap 53 US 64 east (Davie Avenue) – Mocksville East end of US 64 overlap 54 I-40 – Hickory, Winston-Salem 57.5 I-77 – Statesville, Elkin Harmony 67 NC 901 (Memorial Highway) – Union Grove Yadkin Brooks Crossroads 79 US 421 – Wilkesboro, Yadkinville, Winston-Salem 85.5 I-77 south / US 21 Bus. north – Statesville, Jonesville South end of I-77 overlap US 21 overlaps with Interstate 77 (exits 79 to 83) Surry Elkin 90 I-77 north – Wytheville North end of I-77 overlap; southbound exit and northbound entrance 91.5 NC 268 – Elkin To Elkin Municipal Airport 93 US 21 Bus. south / Popular Springs Road – Elkin Northbound turn left on Popular Springs Road to US 21 Business Alleghany 111 Blue Ridge Parkway Sparta 118.5 NC 18 (Whitehead Street) – Laurel Springs Twin Oaks 121 US 221 south – Jefferson South end of US 221 overlap Virginia County Location Mile[4] # Destinations Notes Grayson Independence 4 US 58 / US 221 north (Main Street) – Mouth of Wilson, Galax North end of US 221 overlap Elk Creek 13 Corners Rock Road Wythe Speedwell 21 SR 619 east / SR 749 west Wytheville 33.5 US 11 (Lee Highway/Main Street) Brief .4 miles (0.64 km) concurrency 35 I-81 / US 52 – Bristol, Roanoke US 21 ends 1.000 mi = 1.609 km; 1.000 km = 0.621 mi      Concurrency terminus •      Closed •      Incomplete access •      Unopened History US 21 in the pre-Interstate era was a north–south highway connecting the area around Lake Erie and the coastal South. One of the few true north–south routes to cross the middle Appalachian Mountains, it became an important corridor for motor traffic between northeastern Ohio, western Pennsylvania, (with U.S. Route 19) and western New York state and central North Carolina, central and southeastern South Carolina, and by connecting with other highways, coastal Georgia and most of Florida. US 21 originally (in 1926) connected Cleveland, Ohio and Yemassee, South Carolina. In 1935 it was extended to Beaufort, South Carolina, and again in 1953 to its current southern terminus at the Atlantic Coast at Hunting Island State Park, between the city of Beaufort and Fripp Island.[5] In the Interstate Highway era much of U.S. 21 became an obvious corridor for a long-distance expressway. The West Virginia Turnpike between Charleston, West Virginia, and Princeton, West Virginia, was the first segment of a planned series of toll highways along or near US 21 from Cleveland, Ohio to Charlotte, North Carolina. All of the other toll highways were shelved in favor of freeways built with Interstate funding; these freeways and the West Virginia Turnpike became Interstate 77, which completely supplants old U.S. 21 as a long-distance through route. Interstate 77 was later extended to Columbia, South Carolina, also within a few miles of US 21. Between Cleveland and Charleston, all but a relatively short segment of US 21 was completely deleted in favor of Interstate 77, the relics being State Route 21 and State Route 821 between Byesville, Ohio and Marietta, Ohio. The section of U.S. 21 between Mineral Wells and Charleston is now signed as County Route 21 (circular shield) in all four counties along the route (Wood, Wirt, Jackson, and Kanawha). Between Charleston and its current northern terminus at Wytheville, Virginia, almost all of US 21 coincided with either U.S. Highway 60, U.S. Route 19, or U.S. Highway 52, which remained as US 21 was deleted. The short segment of US 21 in southern West Virginia not coinciding with another U.S. route became an extension of West Virginia Route 16. In North Carolina, US 21 originally entered the state along today's NC 51 into Pineville, then followed Old Pineville Road into Charlotte. In the mid-1930s, US 21 moved over to South Boulevard from Old Pineville Road. In 1969, US 21 was rerouted following today's I-77 alignment, the old route was replaced by an extension of US 521. From 1975-1987, US 21 moved north in segments onto I-77 to its current alignment ending at exit 16A (Sunset Road). Further north, US 21 originally followed Old Statesville Road, replaced in 1956 by NC 115. In 1966, US 21 was bypassed around Jonesville and Elkin, replaced with US 21 Business route.[6] Bannered routes South Carolina business loops There are four U.S. Route 21 Business loop in South Carolina: Beaufort – A 4.4-mile (7.1 km) route that goes through downtown Beaufort, via Sea Island Parkway, Carteret Street and Boundary Street.[7] Orangeburg – A 2.7-mile (4.3 km) route that goes through downtown Orangeburg, via Magnolia Street.[8] Rock Hill – A 6.6-mile (10.6 km) route that goes through downtown Rock Hill, via Main Street, Oakland Street and Cherry Road.[9] Fort Mill – A 7.1-mile (11.4 km) route that goes through downtown Fort Mill, via Spratt Street and Old Nation Road.[10] North Carolina business loop There is one U.S. Route 21 Business loop in North Carolina: Elkin – It is a 7.8-mile (12.6 km) route that goes through downtown Jonesville and Elkin. The route was established in 1966 after mainline US 21 moved east onto a completed section of I-77.[11][12] See also Blue Ridge Parkway Catawba River Carowinds Congaree River Hunting Island State Park Lake Norman Lake Norman State Park Lake Wateree Lake Wateree State Recreation Area Marine Corps Air Station Beaufort Mount Rogers National Recreation Area New River Stone Mountain State Park Uptown Charlotte Yadkin River Related U.S. routes U.S. Route 121 (proposed) U.S. Route 221 U.S. Route 321 U.S. Route 421 U.S. Route 521 References Wikimedia Commons has media related to: U.S. Route 21 ^ "US Highways from US 1 to US 830". http://www.us-highways.com/us1.htm#US_21. Retrieved 2011-02-02.  ^ a b Google, Inc. Google Maps – US 21 in SC [map]. Cartography by Google, Inc. Retrieved 2011-02-01. ^ a b Google, Inc. Google Maps – US 21 in NC [map]. Cartography by Google, Inc. Retrieved 2011-02-01. ^ a b Google, Inc. Google Maps – US 21 in VA [map]. Cartography by Google, Inc. Retrieved 2011-02-01. ^ "End of US highway 21". http://www.usends.com/20-29/021/021.html. Retrieved 2011-02-02.  ^ "NCRoads.com: U.S. 21". http://www.members.cox.net/ncroads/us021.html. Retrieved 2011-02-02.  ^ Google, Inc. Google Maps – US 21 Bus - Beaufort [map]. Cartography by Google, Inc. Retrieved 2011-02-02. ^ Google, Inc. Google Maps – US 21 Bus - Orangeburg [map]. Cartography by Google, Inc. Retrieved 2011-02-02. ^ Google, Inc. Google Maps – US 21 Bus - Rock Hill [map]. Cartography by Google, Inc. Retrieved 2011-02-02. ^ Google, Inc. Google Maps – US 21 Bus - Fort Mill [map]. Cartography by Google, Inc. Retrieved 2011-02-02. ^ Google, Inc. Google Maps – US 21 Bus - Elkin [map]. Cartography by Google, Inc. Retrieved 2011-02-02. ^ "NCRoads.com: US 21 Business". http://www.members.cox.net/ncroads/us21b.html. Retrieved 2011-02-02.  edit Main U.S. Routes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 40 41 42 43 44 45 46 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 87 89 90 91 92 93 94 95 96 97 98 99 101 163 400 412 425 Lists  U.S. Routes – Bannered – Divided – Bypassed – Portal