Arkansas Highway 21

Highway 21
Route information
Maintained by AHTD
Length:	99.14 mi[1] (159.55 km)
Existed:	1926 – present
Major junctions
South end:	US 64 in Clarksville
	US 62 in Berryville US 412 AR 16
North end:	Route 13, Missouri state line
Location
Counties:	Johnson, Newton, Madison, Carroll
Highway system
Arkansas Highway System Interstate US State Business Spurs Scenic Heritage Trails ← AR 20 AR 22 →

Highway 21 (AR 21, Ark. 21, and Hwy. 21) is a north–south state highway in north central Arkansas. The route of 99.14 miles (159.55 km) runs from US Route 64 (US 64) in Clarksville north across US 62 to Missouri Route 13 at the Missouri state line^[2] The route is entirely a two-lane route with the exception of a brief concurrency with US 62 in Berryville.^[1]

Route description

Near the northern end of the Ozark Highlands Scenic Byway

The route begins at US 64 in Clarksville near the Clarksville Municipal Airport and runs north to the Ozark National Forest. Highway 21 runs north to intersect Highway 292 near Ludwig and Ludwig Lake near Hillcrest in Johnson County.^[3] The route begins a concurrency with Highway 16^{[a 1]} until Edwards Junction when Highway 21 turns north and serves as a southern terminus for Highway 43 at Boxley.^[5] Upon entering Madison County the highway intersects Highway 74 in Kingston and passes the Bank of Kingston, a property on the National Register of Historic Places.^[6] Continuing north, Highway 21 intersects US 412 along the Carroll County line.

Its southern terminus is officially at US 64 just east of Clarksville, though northbound it is posted as beginning at Interstate 40 running north along . The route is signed as a destination at exit 48 from Interstate 40 in Clarksville. Highway 21 is signed as running northbound along Highway 103 for 3 miles (4.8 km) then running east along US 64 for 1-mile (1.6 km) before meeting the true southern terminus.

Ozark Highlands Scenic Byway

Map of the Ozark Highlands Scenic Byway

A portion of Highway 21 was designated as the Ozark Highlands Scenic Byway in 2005 by the Arkansas State Highway and Transportation Department (AHTD).^[7] The byway begins at the southern terminus of Highway 21 at US 64 in Clarksville and runs north to the Buffalo National River near Boxley.^[8] Wildlife and scenic views are frequent along the nearly 35-mile-long (56 km) route.^[7] The highway is popular as a major route to the Ozark National Forest, the Ozark Highlands Trail, and the White River in addition to being the major travel route to cities in the area and points in southern Missouri.^[9]

Major intersections

Mile markers reset at some concurrencies.

County	Location	mi[1]	km	Destinations	Notes
Johnson	Clarksville	0.00	0.00	US 64 (Main Street)
		0.41	0.66	AR 164 east (Airport Road)
	Ludwig	2.99	4.81	AR 292 east
	Hillcrest			AR 818 – University of Arkansas Agricultural Experiment Station
Newton	Fallsville	28.13	45.27	AR 16 west to AR 23 – Fayetteville	South end of AR 16 overlap
	Edwards Junction	36.71	59.08	AR 16 east to AR 7	North end of AR 16 overlap
	Boxley	48.04	77.31	AR 43 north – Ponca, Jasper
Madison	Kingston	57.45	92.46	AR 74 west to AR 23	Traffic circle
Carroll		64.66	104.06	US 412 west – Huntsville	South end of US 412 overlap
		0.00	0.00	US 412 east – Alpena	North end of US 412 overlap
	Berryville	17.56	28.26	US 62 east (South Main Street) – Harrison	South end of US 62 overlap
		0.00	0.00	US 62 west (South Main Street) / AR 221 south – Eureka Springs	North end of US 62 overlap; south end of AR 221 overlap
		2.16	3.48	AR 221 north	North end of AR 221 overlap
	Oak Grove	12.55	20.20	AR 103 south – Green Forest
	Blue Eye	16.67	26.83	AR 311 south
		16.92	27.23	Route 13 north – Springfield	Missouri state line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

See also

• Arkansas Highway 21E
• Arkansas Highway 21W
• Arkansas Highway 221

Notes

1. Although Arkansas highways normally terminate when intersected by a route of greater importance, Highway 21 in Madison County does not end when intersecting Highway 16.^[4]

References

Route map: Bing / Google

1. Planning and Research Division (2010). "Arkansas Road Log Database" (Database). Arkansas State Highway and Transportation Department. Archived from the original on 23 June 2011. Retrieved June 9, 2011.
2. General Highway Map, Carroll County, Arkansas (PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2010. Retrieved June 25, 2011.
3. General Highway Map, Johnson County, Arkansas (PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2010. Retrieved January 1, 2012.
4. Route and Section Map (PDF) (Map) (Newton County ed.). Arkansas State Highway and Transportation Department. Retrieved January 1, 2012.
5. General Highway Map, Newton County, Arkansas (PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2010. Retrieved January 1, 2012.
6. Staff (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.
7. "Highway 21/Ozark Highlands Scenic Byway". Arkansas State Highway and Transportation Department, Planning and Research Division. Retrieved January 9, 2012.
8. Map of Highway 21/Ozark Highlands Scenic Byway (PDF) (Map). Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. Retrieved January 9, 2012.
9. "Ozark Highlands Scenic Byway". Federal Highway Administration. Retrieved January 9, 2012.