U.S. Route 421 in North Carolina
|Maintained by NCDOT|
|Length:||328 mi (528 km)|
|Existed:||1931 – present|
|South end:||Fort Fisher|
| I‑140 / US 17 near Wilmington
US 701 in Clinton
I‑95 in Dunn
I‑85 near Pleasant Garden
I‑73 in Greensboro
I‑40 in Greensboro
I‑77 near Brooks Crossroads
|North end:||US 421 / SR 34 at the TN line near Zionville|
|Counties:||New Hanover, Brunswick, Pender, Sampson, Harnett, Lee, Chatham, Randolph, Guilford, Forsyth, Yadkin, Wilkes, Watauga|
U.S. Route 421 traverses approximately 328 miles (528 km) across North Carolina; from Fort Fisher, on a peninsula between the Atlantic and Cape Fear River, to the Tennessee state line near the community of Zionville. The highway is nominally labeled "north" and "south" throughout North Carolina, though it really follows a general "northwest-southeast" path, and the segment from Greensboro to Boone is almost due east-west, with compass "west" corresponding to the signed "north" direction.
Majority of the highway is part of the North Carolina Strategic Highway Corridors system. Because of this designation, the state has made numerous changes converting a rural two-lane highway into a major Freeway/Expressway with 4 or more 6 lanes. Finding a road named "Old U.S. Route 421" is not uncommon along the entire route.
New Hanover County
US 421 starts at a parking/dock area on the Cape Fear side of the peninsula; within a quarter of a mile, the Fort Fisher Ferry Terminal is located where travelers can ride a ferry to Southport. Immediately after the ferry terminal is the Fort Fisher State Recreation Area, where the first and second battles of Fort Fisher took place.
The highway continues north, going through popular tourist destinations in New Hanover county: Kure Beach, Wilmington Beach, and Carolina Beach. US 421 eventually enters Wilmington along the riverside of the city. At Wooster Street, it goes west, merging with several other highways and funnel through Brunswick county before returning in northwestern New Hanover county; there it links with I-140 before continuing north towards Clinton.
The road between Wilmington and Dunn is mostly two-lane road through the countryside (with exception to Clinton, where it is a freeway bypassing west of the city). There is one rest area located just north of Delway. Most travelers today use I-40, which parallels US 421 10 miles (16 km) to its east. Thus this section will unlikely to ever be widen like it has throughout the rest of the state.
From Dunn to Lillington, it expands into an expressway, connecting the two cities and Campbell University in Buies Creek. At Lillington, it goes through town before redirecting towards Sanford to its west, via two-lane road.
Lee County to Randolph County
At Sanford, US 421 currently goes through the town, but eventually it will bypass the city entirely with the Sanford Bypass (majority of which already built, but does not link to US 421). Once the Sanford Bypass is completed, it will connect Greensboro to Fayetteville on a four-lane highway that bypasses most cities along its route with US 421 and NC 87.
Near Pleasant Garden, US 421 transitions from an expressway to a freeway by overlapping with I-85; it also goes west from this point till Sugar Grove. As the modern eight-lane I-85/US 421 overlap loops south of Greensboro, it soon connects with I-73 and switches to overlap it. Another six miles later, it switches again to I-40 and continues on towards Winston-Salem. Near Kernersville, US 421 switches one last time with Business Loop I-40 going into downtown Winston-Salem. The freeway section through Winston-Salem is the oldest in the Triad and will typically have some construction for either road or bridge repair; Luckily, people can bypass the downtown area by staying on I-40 then taking exit 188, where US 421 meets up again.
Western Piedmont and Foothills
At either exit 1 (via Business Loop I-40) or exit 188 (via I-40), US 421 separates toward Yadkinville. From Winston-Salem to Wilkesboro, US 421 continues on four-lane freeway, much of which was built between 1992-2002. This section of the highway is mostly farmland, with only Yadkinville as a viable place to stop for food and drink. When the highway nears North Wilkesboro, drivers will be able to see the North Wilkesboro Speedway (access via exit 282); there is also a Visitor Center, built in 2009 as the state's first environmentally friendly rest area, located at mile marker 283. As US 421 enters Wilkesboro city limits, it downgrades to an expressway with various stores and restaurants along it. Travelers should anticipate higher traffic volumes between US 421 Business junction and NC 16 junction in Wilkesboro.
As it leaves Wilkesboro, US 421 begins a gradual climbs up the Blue Ridge Mountains, till approximately five miles from Deep Gap where it climbs up significantly. Fortunately, compared to US 221 and US 321 that heads towards Boone, US 421 is considered the safest by being the least steep and curvy route. Access to the Blue Ridge Parkway is located at Deep Gap, as US 421 continues on towards Boone.
As US 421 enters Boone, the expressway ends into a construction zone that plans to widen the highway to Hardin Street. Once past Hardin Street, the road narrows through the downtown area. Traffic is typically bumper-to-bumper, so drivers can follow the US 421 Truck route as an alternate to avoid the downtown area. Boone is also unique that sister routes US 221 and US 321 connect at various points in town; however only the Truck Routes of US 221, US 321, and US 421 join together as they overlap with NC 105 going southwest around town. After leaving Boone, US 421 continues on as a two-lane road to the Tennessee state line, heading on to Mountain City.
- 1931 - US 421 officially appears on highway maps starting from Winston-Salem (junction with US 70/170) to Boone at King/Harding Street intersection (junction with US 221/321). It was solely within the state of North Carolina and was completely overlapped with NC 60.
- 1932 - US 421 was extended both north and south. North from Boone, it extended to Sugar Grove where it then replaced US 321 heading towards Mountain City, Tennessee; US 321 redirects towards Elizabethton, Tennessee. From Winston-Salem, the highway is routed to Wilmington following NC 60.
- 1933 - Highway was realigned around Boone (using a straighter alignment) and in Greensboro (Market Street).
- 1934 - NC 60 is completely removed from its original route, leaving US 421. NC 60 gets renumbered on a short highway in Cherokee county, where it continues to this day.
- 1936 - US 421 is extended south from Wilmington to Carolina Beach, Kure Beach, and Fort Fisher, replacing NC 40.
- 1951-1952 - US 421 bypasses Clinton (on what would be today's Faircloth Freeway). The Wilkesboro area is realigned through town to North Wilkesboro.
- 1954-1955 - US 421 is rerouted going west out of Wilmington via US 17/74/76, then north following NC 133.
- 1957-1958 - US 421 is realigned onto a straighter routing between Deep Gap to Wilkesboro. US 421 is redirected out of North Wilkesboro, old routing is rebranded as US 421-A (Now US 421 Business). US 421 is placed onto one-way streets within Winston-Salem (using 4th and 5th streets), it is also rerouted in Greensboro going from Market Street to Henry Blvd Freeway. Between Erwin and Dunn, US 421 is realigned onto a new four-lane expressway.
- 1962-1963 - US 421 is realigned onto a new road near Sugar Grove and Zionville, leaving the communities of Amantha and Mabel. Between Yadkinville and Winston-Salem, US 421 is given its current alignment, expanding to a freeway after the Yadkin River to I-40; it then overlaps with I-40 through downtown Winston-Salem. In Harnett county, US 421 is moved north, avoiding the community of Mamers, and enters Lillington via Front Street. US 421 is straighten out through Harrells.
- 1964-1968 - US 421 becomes one-way streets through downtown Greensboro (Market Street and Madison/Gaston Avenues). US 421 is rerouted onto the new Faircloth Freeway in Clinton.
- 1969-1970 - US 421 is rerouted onto the new Cape Fear Bridge in Wilmington. US 421 is realigned around Bonlee and Bear Creek.
- 1971-1984 - US 421 completes its bypass around Wilkesboro. Between Greensboro and Staley is upgraded to expressway standards (Joseph M. Hunt Jr Expressway) and bypasses the communities of Pleasant Garden, Climax, Julian, and Liberty. US 421 is rerouted in Sanford, avoiding the community of Broadway.
- 1987-1990 - The Siler City bypass is completed. US 421 is rerouted going north around Greensboro then going south on Henry Boulevard (US 29).
- 1994-1999 - US 421 is removed from all surface roads from Kernersville to Greensboro, follows I-40 to Joseph M. Hunt Jr Expressway.
- 2000-2003 - US 421 is realigned and widen to 4-lane freeway between Yadkinville to Wilkesboro and a 4-lane expressway between Wilkesboro to Boone (though some parts already pre-existed for before 2000). This completes US 421 as a 4-lane (or more) highway from Sanford to Boone.
- 2008 - US 421 is realigned in Greensboro to follow the new southern loop, overlapping with I-73 and I-85 to Joseph M. Hunt Jr Expressway. This was done to give drivers a route direction to Winston-Salem after I-40 returned to its original routing after one year on the southern loop.
- 2012 - In Boone, a 1.1-mile (1.8 km) section, known as King Street, was widened to four to six lanes with a raised concrete median from US 321 (Hardin Street) to east of NC 194 (Jefferson Road). The project cost $16.2 million. 
In Kernersville, the roadway improvements and extension of Macy Grove Road will include the construction of a new interchange with I-40 Business/US 421. Property acquisition is to begin in 2012.
In Winston-Salem, shared with I-40 Business, a 1-mile (1.6 km) section from west of Fourth Street to east of Church Street has begun project development studies to completely upgrade and streamline. The project includes removing the existing pavement and replacing it with new concrete pavement, upgrade and modernize entrance and exit ramps, and replace most of the bridges on and over the freeway. No cost or time frame has been given at this time.
In New Hanover and Brunswick counties, the Cape Fear Skyway has begun its project development studies (since 2007) to build a toll road and bridge that will bypass Wilmington. Early estimates range from $950–$1.1 billion. The environmental impact study is expected to complete in 2014, a record of decision and a complete financial feasibility will be done in 2015.
|New Hanover||Fort Fisher||0.2||0.3||Fort Fisher Ferry Terminal||US 421 begins .2 miles (0.32 km) south of terminal; ferry service to Southport|
|Myrtle Grove||13.5||21.7||NC 132 north (College Road) – Wilmington||Southern terminus of NC 132|
|Wilmington||15||24||US 117 (Shipyard Boulevard) – Wilmington, State Port|
US 76 east / US 17 Bus. north (3rd Street) – Wrightsville Beach, Downtown Wilmington
|East end of US 76 overlap, north end of US 17 Business overlap|
|19||31||Front Street||Partial interchange|
|Brunswick||21||34||US 17 / NC 133 south / US 74 / US 76 west – Bolivia, Southport, Whiteville||South end of US 17/US 17 Business/NC 133 overlap, west end of US 74/76 overlap|
|New Hanover||22||35||U.S.S. North Carolina Road/Battleship Road||To the N.C. Battleship|
|24||39||US 74 east / NC 133 north – Wrightsville Beach, Hightsville||East end of US 74 overlap, north end of NC 133 overlap|
|25.5||41.0||I‑140 east / US 17 north – Hampstead, Topsail Island||North end of US 17 overlap|
|Pender||Long Creek||38.5||62.0||NC 210 – Rocky Point, Currie||Also to Moores Creek National Battlefield on west NC 210|
|Malpass Corner||44||71||NC 11 south / NC 53 – Atkinson, Burgaw||South end of NC 11 overlap|
|52||84||NC 11 north – Penderlea, Willard||North end of NC 11 overlap|
|Sampson||Harrells||60||97||NC 41 (Tomahawk Highway/Wallace Highway) – Tomahawk, Wallace|
|Delway||65||105||NC 903 (Magnolia-Lisbon Road) – Magnolia, Kenansville|
US 701 south (Garland Highway) / US 701 Bus. north (Sunset Boulevard) – Garland, Clinton
|South end of US 701 overlap|
|80||129||To NC 24 east (Tam Road) – Warsaw|
|81||130||NC 24 east (Southwest Boulevard) – Warsaw||Southbound entrance and northbound exit, east end of NC 24 overlap|
|82||132||NC 24 west (Sunset Avenue) – Roseboro, Fayetteville||West end of NC 24 overlap|
|83||134||US 701 north (Faircloth Freeway) – Newton Grove||North end of US 701 overlap|
|95||153||NC 242 south (Salemburg Highway) – Salemburg, Roseboro||South end of NC 242 overlap|
|Spivey's Corner||99||159||US 13 (Fayetteville Highway/Newton Grove Highway) – Fayetteville, Newton Grove|
|100||161||NC 242 north (Benson Highway) – Benson||North end of NC 242 overlap|
|Harnett||Dunn||109||175||I‑95 / NC 55 east – Fayetteville, Benson, Newton Grove||East end of NC 55 overlap|
|110||177||US 301 (Clinton Avenue) – Fayetteville, Benson|
|Erwin||114||183||NC 55 north / NC 82 south / NC 217 south (13th Street) – Erwin, Coats||West end of NC 55 overlap|
|119||192||NC 27 east – Coats||East end of NC 27 overlap; Harnett County Airport at intersection|
|Lillington||124||200||US 401 north (Cornelius Harnett Boulevard) / NC 210 north (Main Street) – Fuquay-Varina||North end of US 401 and NC 210 overlap|
|125||201||US 401 south / NC 27 east / NC 210 south (Main Street)||South end of US 401/NC 210 overlap, east end of NC 27 overlap|
NC 87 Byp. – Raleigh, Pittsboro, Fayetteville
|144||232||NC 87 south – Fayetteville||South end of NC 87 overlap|
|145||233||NC 42 east / NC 78 west (Main Street) – Fuquay-Varina||East end of NC 42 overlap|
US 1 Bus. / NC 42 west (Carthage Street)
|West end of NC 42 overlap|
|149||240||US 1 / US 15 / US 501 / NC 87 north – Raleigh, Southern Pines||North end of NC 87 overlap|
|Chatham||163||262||NC 902 – Pittsboro|
|168||270||168||Sam Fields Road – Siler City|
|Siler City||171||275||171||US 64 – Siler City, Pittsboro|
|174||280||174||Piney Grove Church Road|
|Randolph||Staley||180||290||180||Old US Highway 421 – Liberty, Staley|
|Liberty||181||291||181||NC 49 – Liberty, Ramseur|
|184||296||Old Liberty Road – Liberty|
|Guilford||Julian||190||306||NC 62 – High Point, Burlington|
|197||317||197||I‑85 north to I‑40 – Durham, Raleigh||North end of I-85 overlap|
|US 421 overlaps with Interstate 85 (exits 126 to 121), Interstate 73 (exits 97 to 103), Interstate 40 (exits 212 to 206), and Interstate 40 Business (exits 16 to 1).|
|Forsyth||Winston-Salem||234||377||238||I‑40 / I‑40 Bus. east – Winston-Salem, Statesville||West end of Interstate 40 Business overlap|
|236||380||240||Peace Haven Road|
|Lewisville||238||383||242||Lewisville-Clemmons Road – Lewisville, Clemmons|
|240||386||244||Williams Road – Lewisville|
|Yadkin||245||394||249||Dinkins Bottoms Road/Baltimore Road|
|247||398||251||Spear Bridge Road|
|249||401||253||Shacktown Road/Old Stage Road|
|252||406||256||Unifi Industrial Road|
|Yadkinville||253||407||257||US 601 (State Street) – Yadkinville, Mocksville|
|Brooks Crossroads||259||417||263||US 21 – Jonesville|
|260||418||264||Asbury Church Road|
|262||422||265||I‑77 – Elkin, Statesville, Charlotte||Northbound is exit 265A, southbound is exit 265B|
|264||425||267||Windsor Road/Oak Grove Church Road|
|269||433||272||To NC 268 (Clingman Road/Somers Road)|
|273||439||276||To NC 268 (Red, White, and Blue Road/Mathis Farm Road)|
|274||441||277||Windy Gap Road/Speedway Road|
US 421 Bus. / NC 115 (Statesville Road) – North Wilkesboro, Statesville
|Wilkesboro||282||454||285||Brushy Mountain Road – Wilkesboro|
|283||455||286A||NC 16 south / NC 18 (Cherry Road) – Wilkesboro, Taylorsville, Lenoir||South end of NC 16 overlap|
|283.5||456.2||286B||NC 268 – Wilkesboro|
US 421 Bus. (D Street) – North Wilkesboro
|287||462||NC 16 north – Jefferson||North end of NC 16 overlap|
|Watauga||Deep Gap||304||489||Blue Ridge Parkway|
|305||491||US 221 north – West Jefferson||North end of US 221 overlap|
|Boone||313||504||NC 194 north (Jefferson Road) – Todd||North end of NC 194 overlap|
|314||505||US 221 south / NC 105 south (Highway 105 Extension) – Linville, Banner Elk||South end of US 221 overlap|
|314.5||506.1||US 321 south (Hardin Street) – Blowing Rock||South end of US 321 overlap|
|Vilas||320||515||NC 194 south – Valle Crucis||South end of NC 194 overlap|
|Sugar Grove||321||517||US 321 north – Elizabethton||North end of US 321 overlap|
|State line||328||528||US 421 north / SR 34 north – Mountain City||Continuation into Tennessee|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
Note – Exit numbers west of Winston-Salem are aligned when US 421 went north around Greensboro in late-1980s/early-1990s. As a result from realignments in Greensboro, the actual mileage vs. exit number mileage is off by an average of 3.5 miles (5.6 km).
Though the highway is commonly known as "421" throughout the state, the highway does have other known names it uses locally in areas.
- Burnett Boulevard - Road name briefly used in Wilmington, between Carolina Beach Road and 3rd Street.
- Carolina Beach Road - Road name from Seabreeze to Burnett Boulevard in Wilmington.
- Cornelius Harnett Boulevard - Road name from Main Street to Lillington city limit.
- Cumberland Street - Road name within Dunn city limits.
- Delway Highway - Road name between Harrells to Delway in Sampson county.
- Doc and Merle Watson Highway - Official name of highway between the Wilkes/Watauga county line to Boone.
- Faircloth Freeway - Road name within Clinton city limits.
- Fort Fisher Boulevard - Road name from Kura Beach to south terminus of US 421.
- Front Street - Road name from main street to Lillington city limit.
- King Street - Road name within Boone city limits.
- Lake Park Boulevard - Road name within Carolina Beach city limits.
- Jackson Boulevard - Road name within Erwin city limits.
- Joseph M. Hunt Jr Expressway - Road name from Randolph/Guilford county line to I-85; expressway continues on into Greensboro, which was an old US 421 alignment.
- Paul Green Memorial Highway - Road Name from Erwin to Lillington.
- Plain View Highway - Road name from US 13 in Spivey's Corner to I-95 near Dunn.
- Main Street - Road name between Cornelius Harnett Boulevard and Front Street in Lillington.
- Northwest Boulevard - Road name from Clinton to Kitty Fork.
- Spivey's Corner Highway - Road name from Kitty Fork to US 13 in Spivey's Corner.
- Taylors Bridge Highway - Road name from Delway to Clinton.
- Watson Brame Expressway - Road name throughout Wilkes county.
- Wilmington Highway - Road name from the Sampson/Pender county line to Harrells.
- Google Inc. "US 421 in NC". Google Maps (Map). Cartography by Google, Inc. http://maps.google.com/maps?f=d&source=s_d&saddr=US-421+N%2FFort+Fisher+Blvd+S&daddr=34.9213698,-78.2570384+to:35.67714,-79.41423+to:36.10391,-80.18972+to:36.2404911,-81.7600909+to:TN-34+S%2FUS-421+N&hl=en&geocode=FZkuBgId17da-w%3BFZnbFAIdcuRV-yn1Xgnu2sCriTHQ3tdOvPhOiQ%3BFdRjIAIdKjxE-ymf46Rh5ExTiDFCX5b_CkCK9A%3BFebmJgId6GY4-ymBbyROs65TiDH57-O6aTYRAw%3BFWv8KAIdpnAg-yk7ReaGtPZQiDH8sMCqXb1Qxw%3BFRF_KgIdsr0g-w&mra=dpe&mrcr=0&mrsp=4&sz=13&via=1,2,3,4&sll=36.253687,-81.750641&sspn=0.103406,0.222988&ie=UTF8&ll=35.424868,-78.97522&spn=3.343431,7.13562&z=8. Retrieved January 31, 2011.
- "NCDOT: Strategic Highway Corridors". Retrieved October 28, 2010.
- "NCDOT: North Carolina Rest Area System". Retrieved 2011-01-27.
- "R2417.pdf (Sanford Bypass)". Retrieved 2010-10-29.
- "NCDOT: US 421 Widening Project". Retrieved October 28, 2010.
- "NCDOT: Scenic Byways". Retrieved January 7, 2011.
- "NCRoads.com: U.S. 421". Retrieved January 27, 2013.[unreliable source]
- "NCDOT: Macy Grove Road Improvements Project". Retrieved November 24, 2011.
- "NCDOT: Macy Grove Road Improvements Project Map". Retrieved November 24, 2011.
- "NCDOT: Business 40". Retrieved November 24, 2011.
- "NCDOT: Business 40 Project Vicinity and Study Area Map". Retrieved November 24, 2011.
- "NCDOT: Cape Fear Skyway". Retrieved November 24, 2011.
- "NCDOT: Cape Fear Skyway Project Map". Retrieved November 24, 2011.
- Media related to U.S. Route 421 in North Carolina at Wikimedia Commons
- NCRoads.com Annex: US 421
- NCRoads.com Annex: US 421A
- North Carolina US Highway Termini - US 421
|U.S. Route 421|
|North Carolina||Next state: