Texas State Highway 21

"TX 21" redirects here. TX 21 may also refer to Texas's 21st congressional district.

State Highway 21
Route information
Maintained by TxDOT
Length:	272.7 mi (438.9 km)
Existed:	before 1917 – present
Major junctions
West end:	SH 80 at San Marcos
	US 183 in Mustang Ridge US 290 near Paige US 77 near Lincoln SH 6 / US 190 in Bryan I-45 / US 190 in Madisonville US 287 in Crockett US 69 in Alto US 59 in Nacogdoches US 96 in San Augustine
East end:	LA 6 near Milam
Location
Counties:	Hays, Caldwell, Bastrop, Lee, Burleson, Brazos, Madison, Houston, Cherokee, Nacogdoches, San Augustine, Sabine
Highway system
Highways in Texas Interstate • US • TX (Loops – Spurs – Rec – FM) ← SH 20 SH 22 →

State Highway 21, or SH 21, runs from the Texas-Louisiana boundary east of San Augustine to San Marcos in east and central Texas.

History

SH 21 was one of the original 26 routes proposed in Texas in 1917 along a route from St. Augustine to Gonzales. There was proposed extension southward to Karnes City by 1922, but most of it was transferred to SH 80 instead. In 1926, the terminus was shortened to Giddings. By 1943, the western terminus had been rerouted through Paige to end in San Marcos, along its current route.

Business routes

SH 21 has one business route.

Business State Highway 21-H is a Business Loop that runs through Kurten in central Texas. The road was bypassed in 2002 by SH 21.

Junction list

County	Location	Mile	Destinations	Notes
Hays	San Marcos		SH 80 – San Marcos, Luling	Interchange
Caldwell along Hays County line			FM 1966 east – Maxwell
			FM 150 west – Kyle
	Uhland		FM 2720 east (Old Lockhart Rd)
	Niederwald		FM 2001 south (Kenetsch Rd)	West end of FM 2001 overlap
			FM 2001 north (Niederwald Strasse)	East end of FM 2001 overlap
Caldwell	Mustang Ridge		US 183 – Austin, Lockhart	Interchange
			FM 1854 east
Bastrop			FM 812	Interchange
	Cedar Creek		FM 535 south
	Wyldwood		FM 1209 north
			SH 71 west – Garfield	Interchange, west end of SH 71 overlap
			FM 20 south (Texas Independence Trl)
			FM 969 north
	Bastrop		SH 304 south	Interchange, west end of freeway
			Hasler Blvd	Interchange
			Loop 150 east	Interchange, east end of freeway
			SH 71 east / SH 95 east – Smithville	East end of SH 71 overlap, south end of SH 95 overlap
			SH 95 north – Elgin	North end of SH 95 overlap
			Loop 150 west (Chestnut St)	West end of SL 150 overlap
			Loop 150 east	East end of SL 150 overlap
			PR 1 east – Bastrop State Park
	Circle D-KC Estates		FM 1441 west
			US 290 – Elgin, Giddings	Interchange
	Paige		Spur 186 south (Gonzales St)
Lee			FM 2440 east (Manheim Rd)
			FM 1624
			US 77 – Lexington, Giddings	Interchange
			FM 3403 west
			FM 141 east (Ramsey St) – Dime Box
Burleson			FM 696 north
			FM 60 east
			FM 908 west
	Caldwell		FM 975 east (Banks St)
			SH 36 – Milano, Somerville
			FM 2000 north
			FM 1362 north	West end of FM 1362 overlap
			FM 1362 south	East end of FM 1362 overlap
			FM 50 south	West end of FM 50 overlap
Brazos			FM 50 north	East end of FM 50 overlap
			SH OSR east
			SH 47 south	Interchange
	Bryan		FM 2818 (Harvey Mitchell Pkwy)	Interchange
			FM 1687 west (Sandy Point Rd)
			FM 158 east (William J Bryan Pkwy)
			Bus. SH 6-R (Texas Ave)
			FM 974 north (Tabor Rd)
			SH 6 / US 190 west (Earl Rudder Frwy)	Interchange, west end of US 190 overlap
	Wixon Valley		FM 2776 north
	Kurten		Bus. SH 21-H east
			FM 2038 east
			Bus. SH 21-H west
			FM 974 west (Tabor Rd)
Madison			FM 2865 north
	North Zulch		FM 39 – Normangee, Iola	Interchange
			Loop 160 north (Trinity Ave)
			Loop 160 west (5th St)
			FM 1372 south
			FM 1452 north	West end of FM 1452 overlap
			FM 1452 south	East end of FM 1452 overlap
	Madisonville		FM 978 west (Woodrow St)
			Spur 174 south (Madison St)
			SH 75 (May St) – Centerville, Huntsville
			I-45 / US 190 east – Centerville, Huntsville	Interchange, east end of US 190 overlap
			FM 2346 north
			FM 1428 east
	Midway		SH OSR east – Normangee
			FM 247 south
			FM 3060 north
			FM 2548 east
			FM 2548 south
Houston			FM 2498 west
			FM 3275 east
			FM 1280
			FM 2967 north
			SH 7 west – Centerville	West end of SH 7 overlap
	Crockett		Loop 304
			FM 229 north (Durrette Dr)
			SH 7 east (Goliad Ave) – Davy Crockett National Forest	East end of SH 7 overlap
			SH 19 south (4th St) – Lovelady	South end of SH 19 overlap
			SH 19 / US 287 north (Houston Ave) – Grapeland	North end of SH 19 overlap, west end of US 287 overlap
			US 287 south (5th St) – Groveton	East end of US 287 overlap
			FM 2022 north (6th St)
			Loop 304
			FM 3187 east
			FM 1733 east (Forest Service Rd 524)
	Davy Crockett National Forest		FM 227 south	West end of FM 227 overlap
			FM 227 west	East end of FM 227 overlap
			PR 44 west – Mission Tejas State Park
Cherokee			FM 220 south
	Alto		SH 294 west (Elkhart St)
			US 69 (Marcus St) – Rusk, Lufkin
			FM 241 west
			FM 2708 south
Nacogdoches			FM 225 south	West end of FM 225 overlap
			FM 225 north	East end of FM 225 overlap
	Nacogdoches		US 59 / Loop 224 (Stallings Dr) – Garrison, Lufkin	Interchange
			FM 225 west (Durst St)
			US 59 Bus. / SH 7 west (South St) – Davy Crockett National Forest	West end of SH 7 overlap
			FM 1275 (University Dr)
			FM 2259 south (Shawnee St)
			SH 7 east (Center Rd) – Center	East end of SH 7 overlap
			Loop 224 (Stallings Dr)	Interchange
			FM 226 south
	Chireno		FM 95 / Loop 34 south (Main St)
			Loop 34 west (Gingerbread Ln)
San Augustine			FM 1196 south
			FM 354 north
			FM 3409 south
			Spur 85 south
	San Augustine		US 96 – Center, Pineland	Traffic circle intersection
			Loop 547 east (Columbia St)
			SH 147 south (Broadway St) – Angelina National Forest	West end of SH 147 overlap
			FM 3230 north (Harrison St)
			FM 2213 south (Liberty St)
			SH 147 north (Clark St)	East end of SH 147 overlap
			Loop 547 west (Columbia St)
			FM 3483 south
			FM 3153 east – Sabine National Forest
			FM 1 south
Sabine			Spur 35 south (McMahans Chapel Rd)
			FM 3448 north – Sabine National Forest
			FM 330 north – Sabine National Forest
			SH 103 west – Angelina National Forest
	Milam		SH 87 – Hemphill
	Sabine National Forest		FM 3121 / FM 242 south (Palo Gaucho Crossing)
Sabine			LA 6 east – Many
1.000 mi = 1.609 km; 1.000 km = 0.621 mi