List of highways in Williamson County, Texas

The following is a list of highways in Williamson County, Texas, which are maintained by the Texas Department of Transportation. All state highways in Texas are paved.

Location of Williamson County

Interstate Highways
Route Name Direction Termini Junctions Length Remarks
I-35[1] S/N Travis County to Bell County
Approximately 27.6 mi (44.4 km) Junction with SH 45/SH 45 Toll located at Travis County line

U.S. Highways
Route Name Direction Termini Junctions Length Remarks
US 79[2] S/N I-35 to Milam County
Approximately 30.3 mi (48.8 km) Known in Round Rock as Palm Valley Blvd (from IH 35 to CR 122)

Known in Taylor as W 2nd St (west of loop), Carlos G Parker Blvd (on loop), and E 4th St (east of loop)

US 183[3] S/N Travis County to Burnet County
Approximately 30.5 mi (49.1 km) Known in Austin as Ed Bluestein Blvd (Montopolis Dr to US 290), as Anderson Ln (US 290 to SL 275 aka N Lamar Blvd), and as Research Blvd (SL 275 aka N Lamar Blvd to Lakeline Blvd).

Known in Cedar Park as Bell Blvd (from Lakeline Blvd to Osage Dr).


Bus. US 79[4]		 W/E US 79 to US 79
3.246 mi (5.224 km) Route entirely in Taylor, where it is known as W 2nd St, two blocks of Main St (also SH 95), and E 4th St.

State highways
Route Name Direction Termini Junctions Length Remarks
SH 29[5] W/E Burnet County to SH 95
Approximately 35.7 mi (57.5 km) Known in Georgetown as University Ave.
SH 45 Exists discontinuously as frontage roads of SH 45 Toll (see below).
SH 95[6] S/N Travis County to Bell County
Approximately 27.9 mi (44.9 km)
SH 138[7] W/E US 183 to SH 195
6.357 mi (10.231 km)
SH 195[8] S/N I-35 / SH 130 Toll to Bell County
Approximately 18.1 mi (29.1 km)

State highway loops, spurs, and business routes
Route Name Direction Termini Junctions Length Remarks
Spur 26[9] S/N I-35 to RM 2243
1.171 mi (1.885 km) Forms southernmost portion of Austin Ave in Georgetown.
Spur 158[10] S/N I-35 to I-35
Approximately 2.3 mi (3.7 km) Includes Williams Dr from IH 35 to N Austin Ave, plus N Austin Ave from Williams Dr until NE Inner Loop and IH 35 frontage road.

Bus. SH 195		 S/N SH 195 to SH 195
Approximately 4.6 mi (7.4 km) Known in Florence as Patterson Ave.
Spur 277[11] N/S FM 1466 to SH 95
0.647 mi (1.041 km) Route entirely in Coupland, where it is known as S Commerce St.
Loop 332[12] W/E SH 29 to SH 29
1.99 mi (3.20 km) Known in Liberty Hill as Main St.
Spur 379[13] N/S I-35 to US 79
Approximately 1.4 mi (2.3 km) Route entirely in Round Rock, consists of Old Settlers Blvd between IH 35 and Mays St, plus Mays St between Old Settlers Blvd and Palm Valley Blvd (US 79).

Toll roads
Route Name Direction Termini Junctions Length Remarks
Loop 1 Toll S/N Travis County to SH 45 Toll
Approximately 1.2 mi (1.9 km) In Travis County this road is known as N MoPac Blvd and/or Expy; these names do not extend into Williamson County;
SH 45 Toll W/E US 183 to Travis County
Approximately 7.9 mi (12.7 km)
  • Frontage road SH 45 known as Louis Henna Blvd east of CR 172 (in and near Round Rock).
SH 130 Toll S/N Travis County to I-35
Approximately 14.7 mi (23.7 km) Designated Pickle Pkwy by Texas Transportation Code §225.073[14]
183A Toll Road S/N US 183 to US 183
Approximately 10.7 mi (17.2 km)

Farm and Ranch to Market Roads
Route Name Direction Termini Junctions Length Remarks
FM 112[15] W/E SH 95 to Milam County
Approximately 18.0 mi (29.0 km) Known in Taylor as E Walnut St and as Martin Luther King, Jr Blvd.
RM 243[16] E/W US 183 to Burnet County
Approximately 0.3 mi (0.48 km)
FM 397[17] Clockwise US 79 to SH 95
3.456 mi (5.562 km) Route entirely in Taylor, where it is known as Carlos G Parker Blvd and forms northwest quadrant of a beltway loop
FM 486[18] N/S Milam County to FM 112
  • FM 112
 Approximately 2.9 mi (4.7 km)
FM 487[19] W/E
  • Bus. SH 195 to Bell County
  • Bell County to Bell County
Approximately 27.8 mi (44.7 km)
  • Known in Florence as E Main St
  • Known in Jarrell as E Ave J, S 6th St, Ave L, IH 35 frontage roads, and also C. Bud Stockton Loop
  • Official route designation is discontinuous as it excludes above detours (signed as FM 487 due to lack of direct crossing)
  • Enters Bell County north of Schwertner for approximately 0.4 miles (0.64 km), re-enters Williamson County for approximately 7.5 miles (12.1 km), then re-enters Bell County in Bartlett, about 800 feet (240 m) short of SH 95
  • Known in Bartlett as S Brune St and as W Clark St
FM 619[20] N/S FM 1331 to Lee County
  • FM 1331
  • US 79
  • FM 112
  • FM 1466
  • FM Spur 619
 Approximately 20.1 mi (32.3 km) Official route designation excludes 0.34-mile (0.55 km) concurrency with FM 112
FM Spur 619 W/E FM 619 to Lee County
  • FM 619
 Approximately 2.0 mi (3.2 km) Ends at intersection with Lee CR 304 and Post Oak Dr (at Lee County Line)
RM 620[21][22] W/E Travis County to I-35
Approximately 19.8 mi (31.9 km)
  • Officially known as UR (Urban Road) 620
  • Certified mileage includes 3.3-mile (5.3 km) concurrency with SH 45 frontage roads
  • Junction with RM 2769 (Anderson Mill Rd) is at Travis County Line
  • Known within Round Rock city limits as Round Rock Ave
FM 685[23] N/S US 79 to Travis County
Approximately 3.0 mi (4.8 km)
  • Known in and near Hutto (east of SH 130) as Chris Kelley Blvd
  • Concurrent as frontage roads of SH 130 south of that point and into Travis County
FM 734[24][25] W/E RM 1431 to Travis County


Approximately 6.6 mi (10.6 km)
  • Known officially as UR (Urban Road) 734
  • Known locally as Parmer Ln for its entire length
FM 970[26] W/E US 183 to Bus. SH 195
8.061 mi (12.973 km)
FM 971[27] W/E Spur 158 to Williamson County Road 361
  • FM 1105
  • SH 95 (concurrency)
 23.818 mi (38.331 km)
  • Known informally in Georgetown as Weir Rd
  • Known in Granger as W Mesquite St, as S Commerce St for two blocks concurrent with SH 95, and as E Davilla St
  • Certified mileage excludes above concurrency
  • Ends and becomes Williamson CR 361 at an arbitrary point northeast of Granger Lake dam
FM 972[28] W/E I-35 to SH 95
13.685 mi (22.024 km)
FM 973[29] N/S US 79 to Travis County
Approximately 6.8 mi (10.9 km)
FM 1063[30] N/S FM 1331 to US 79
5.761 mi (9.271 km)
FM 1105[31] S/N FM 2606 to FM 487
  • FM 2606
  • FM 972 (concurrency)
  • FM 487
 13.944 mi (22.441 km)
FM 1325[32][33] N/S SH 45 to Travis County
Approximately 1.5 mi (2.4 km) Also known as Burnet Rd (state designation ends at US 183).
FM 1331[34] W/E SH 95 to Milam County
Approximately 12.4 mi (20.0 km)
RM 1431[35] W/E Travis County to I-35
Approximately 10.5 mi (16.9 km)
FM 1460[36] N/S Spur 26 to US 79
8.066 mi (12.981 km)
FM 1466[37] W/E SH 95 to FM 619
6.72 mi (10.81 km)
  • Known in Coupland as Herrin St and one block of N Commerce St
FM 1660[38] N/S SH 29 to SH 95
18.47 mi (29.72 km)
  • Official route designation excludes concurrency with US 79 in Hutto
RM 1869[39] E/W US 183 to Burnet County
Approximately 10.1 mi (16.3 km)
RM 2243[40] E/W Spur 26 to US 183
11.286 mi (18.163 km) Known in Georgetown as Leander Rd
RM 2338[41] N/S FM 970 to Georgetown city limit
8.753 mi (14.087 km)
FM 2843[42] N/S Bell County to FM 487
  • FM 487
 Approximately 3.7 mi (6.0 km)
FM 3349[43] N/S US 79 to FM 1660
4.188 mi (6.740 km)
FM 3405[44] W/E US 183 to RM 2338
7.561 mi (12.168 km)
FM 3406[45] E/W I-35 to Round Rock city limit
2.167 mi (3.487 km)

Adjacent counties
  • Bastrop County (southeast)
  • Bell County (north)
  • Burnet County (west)
  • Lee County (southeast)
  • Milam County (east)
  • Travis County (south)

References
  1. Transportation Planning and Programming Division (n.d.). "Interstate Highway No. 35". Highway Designation Files. Texas Department of Transportation.
  2. Transportation Planning and Programming Division (n.d.). "U.S. Highway No. 79". Highway Designation Files. Texas Department of Transportation.
  3. Transportation Planning and Programming Division (n.d.). "U.S. Highway No. 183". Highway Designation Files. Texas Department of Transportation.
  4. Transportation Planning and Programming Division (n.d.). "Business U.S. Highway No. 79-b". Highway Designation Files. Texas Department of Transportation.
  5. Transportation Planning and Programming Division (n.d.). "State Highway No. 29". Highway Designation Files. Texas Department of Transportation.
  6. Transportation Planning and Programming Division (n.d.). "State Highway No. 95". Highway Designation Files. Texas Department of Transportation.
  7. Transportation Planning and Programming Division (n.d.). "State Highway No. 138". Highway Designation Files. Texas Department of Transportation.
  8. Transportation Planning and Programming Division (n.d.). "State Highway No. 195". Highway Designation Files. Texas Department of Transportation.
  9. Transportation Planning and Programming Division (n.d.). "State Highway Spur No. 26". Highway Designation Files. Texas Department of Transportation.
  10. Transportation Planning and Programming Division (n.d.). "State Highway Spur No. 158". Highway Designation Files. Texas Department of Transportation.
  11. Transportation Planning and Programming Division (n.d.). "State Highway Spur No. 277". Highway Designation Files. Texas Department of Transportation.
  12. Transportation Planning and Programming Division (n.d.). "State Highway Loop No. 332". Highway Designation Files. Texas Department of Transportation.
  13. Transportation Planning and Programming Division (n.d.). "State Highway Spur No. 379". Highway Designation Files. Texas Department of Transportation.
  14. Texas Transportation Code - TRANSP § 225.073. Pickle Parkway
  15. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 112". Highway Designation Files. Texas Department of Transportation.
  16. Transportation Planning and Programming Division (n.d.). "Ranch to Market Road No. 243". Highway Designation Files. Texas Department of Transportation.
  17. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 397". Highway Designation Files. Texas Department of Transportation.
  18. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 486". Highway Designation Files. Texas Department of Transportation.
  19. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 487". Highway Designation Files. Texas Department of Transportation.
  20. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 619". Highway Designation Files. Texas Department of Transportation.
  21. Transportation Planning and Programming Division (n.d.). "Ranch to Market Road No. 620". Highway Designation Files. Texas Department of Transportation.
  22. Transportation Planning and Programming Division (n.d.). "Urban Road No. 620". Highway Designation Files. Texas Department of Transportation.
  23. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 685". Highway Designation Files. Texas Department of Transportation.
  24. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 734". Highway Designation Files. Texas Department of Transportation.
  25. Transportation Planning and Programming Division (n.d.). "Urban Road No. 734". Highway Designation Files. Texas Department of Transportation.
  26. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 970". Highway Designation Files. Texas Department of Transportation.
  27. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 971". Highway Designation Files. Texas Department of Transportation.
  28. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 972". Highway Designation Files. Texas Department of Transportation.
  29. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 973". Highway Designation Files. Texas Department of Transportation.
  30. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1063". Highway Designation Files. Texas Department of Transportation.
  31. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1105". Highway Designation Files. Texas Department of Transportation.
  32. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1325". Highway Designation Files. Texas Department of Transportation.
  33. Transportation Planning and Programming Division (n.d.). "Urban Road No. 1325". Highway Designation Files. Texas Department of Transportation.
  34. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1331". Highway Designation Files. Texas Department of Transportation.
  35. Transportation Planning and Programming Division (n.d.). "Ranch to Market Road No. 1431". Highway Designation Files. Texas Department of Transportation.
  36. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1460". Highway Designation Files. Texas Department of Transportation.
  37. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1466". Highway Designation Files. Texas Department of Transportation.
  38. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 1660". Highway Designation Files. Texas Department of Transportation.
  39. Transportation Planning and Programming Division (n.d.). "Ranch to Market Road No. 1869". Highway Designation Files. Texas Department of Transportation.
  40. Transportation Planning and Programming Division (n.d.). "Ranch to Market Road No. 2243". Highway Designation Files. Texas Department of Transportation.
  41. Transportation Planning and Programming Division (n.d.). "Ranch to Market Road No. 2338". Highway Designation Files. Texas Department of Transportation.
  42. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 2843". Highway Designation Files. Texas Department of Transportation.
  43. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 3349". Highway Designation Files. Texas Department of Transportation.
  44. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 3405". Highway Designation Files. Texas Department of Transportation.
  45. Transportation Planning and Programming Division (n.d.). "Farm to Market Road No. 3406". Highway Designation Files. Texas Department of Transportation.
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