As of September 2011, state law allows TxDOT to create higher speed limit on any state highway if found to be reasonable and safe through an engineering study. Each new 75 or 80 mph speed limit must be approved by the Texas Transportation Commission.

The tables below show approved 75 and 80 mph zones and are divided by the month in which the Commission approved the speed limit increase.

March 2012 - 80 mph

Highway	Location	Previous Speed	Miles	Map
SH 130	From IH 35 in Williamson County to US 183 in Travis County	75	45
SH 45 S	From US 183 to IH 35 in Travis County	75	9.2

January 2012 - 75 mph

Highway	Location	Previous Speed	Miles	Map
IH 10	From the New Mexico State Line to Mile Marker 8 in El Paso	70	9
IH 10	From Mile Marker 36 South of El Paso to the El Paso – Hudspeth County Line	70	26
IH 10	From the Kerr – Gillespie County Line to Loop 1604 in San Antonio	70	63
IH 10	From Mile Marker 582 in San Antonio to the Austin – Waller County Line	70	145
IH 10	From the Chambers – Jefferson County Line to US 69 in Beaumont	70	19
IH 10	From the Jefferson – Orange County Line to the Louisiana State Line	70	25
IH 20	From the Ward – Crane County Line to the Palo Pinto – Parker County Line	70	310
IH 20	From the Kaufman - Van Zandt County Line to the Louisiana State Line	70	122
IH 27	From Mile Marker 8 North of Lubbock to Mile Marker 117 in Amarillo	70	109
IH 30	From the Rockwall – Hunt County Line to FM 989 in Texarkana	70	139
IH 35	From Mile Marker 7 in Laredo to the Webb – La Salle County Line	70	31
IH 35	From the Frio – Medina County Line to SS 442 in San Antonio	70	31
IH 35W	From the IH 35 Split North of Hillsboro to the Hill – Johnson County Line	70	14
IH 35E	From the IH 35 Split North of Hillsboro to the Hill – Ellis County Line	70	8
IH 35	From the Denton – Cooke County Line to the Oklahoma State Line	70	22
IH 37	From Mile Marker 4 in Corpus Christi to Mile Marker 134 in San Antonio	70	130
IH 40	From the New Mexico State Line to Mile Marker 64 in Amarillo	70	65
IH 40	From Mile Marker 75 in Amarillo to the Oklahoma State Line	70	101
IH 44	From Mile Marker 4 in Wichita Falls to the Oklahoma State Line	70	11
IH 45	From the Montgomery – Walker County Line to the Navarro – Ellis County Line	70	143

October 2011 - 75 mph

September 2011 - 75 mph

Highway	Location	Previous Speed	Miles	Map
I-35	From Georgetown in Williamson County to Salado in Bell County	70 and 65	21.7
SH 130	From IH 35 in Williamson County to US 183 in Travis County	70	45
SH 45 S	From US 183 to IH 35 in Travis County	70	9.2
US 281	From the Lampasas-Burnet County Line to 8 miles north of the Burnet City Limit	70	11.9

More Information

• Speed Limits - Main Page