State Highway 75 is a Texas state route remnant of the old U.S. Highway 75. State Highway 75 retained the number as a state highway when Interstate 45 supplanted U.S. Highway 75 south of Dallas

Dallas, Texas

Dallas is the third-largest city in Texas and the ninth-largest in the United States. The Dallas-Fort Worth Metroplex is the largest metropolitan area in the South and fourth-largest metropolitan area in the United States...

 except in Dallas, where old U.S. Highway 75 is now State Highway 310

State Highway 310 (Texas)

State Highway 310 is a short north–south state highway entirely within Dallas, Texas. It is a portion of the old route of U.S. Highway 75 along the South Central Expressway, which now ends in downtown Dallas, in the southeastern part of Dallas that Interstate 45 and U.S...

, and through Ferris

Ferris, Texas

Ferris is a city in Dallas and Ellis Counties in the U.S. state of Texas. The population was 2,175 at the 2000 census.-Geography:Ferris is located at ....

, Palmer

Palmer, Texas

Palmer is a town in Ellis County, Texas, United States. The population was 1,774 at the 2000 census.-Geography:Palmer is located at .According to the United States Census Bureau, the town has a total area of , all of it land....

, Ennis

Ennis, Texas

Ennis is a city in Ellis County, Texas, United States, and a southeastern suburb of Dallas. The population was 16,045 at the 2000 census.In 1871, the Houston and Texas Central Railroad purchased of land in Ellis County at a price of , establishing the line's northern terminus. On May 8, 1872,...

, and Corsicana

Corsicana, Texas

Corsicana is a city in Navarro County, Texas, United States. It is located on Interstate 45 some fifty-five miles south of downtown Dallas. The population was 24,485 at the 2000 census...

, where the old highway is signed as Business Route I-45. This route was designated in 1987.

Termini

• Southern terminus is in Conroe
  Conroe, Texas
  Conroe is a suburban city 40 miles north of Houston in the gulf coastal plains/piney woods region of southeast Texas.It is the seat of Montgomery County and falls within the metropolitan area.As of the 2000 U.S...
  
  , where it merges into Interstate 45 at the southern side of Loop 336.
• Northern terminus is approximately three miles north of Streetman
  Streetman, Texas
  Streetman is a town in Freestone and Navarro Counties in the U.S. state of Texas. In 1990 the population was 260. The population dropped to 203 in 2000.-Geography:...
  
  , in the southern section of Navarro County, where it becomes the east side frontage road for I-45.

Previous routes

SH 75 was previously designated in 1926 to replace SH 13A

State Highway 13 (Texas)

State Highway 13 was a state highway in the U.S. state of Texas that ran from Amarillo due west to the New Mexico border near Glenrio, Texas....

 from Amarillo

Amarillo, Texas

Amarillo is the 14th-largest city, by population, in the state of Texas, the largest in the Texas Panhandle, and the seat of Potter County. A portion of the city extends into Randall County. The population was 190,695 at the 2010 census...

 east to the Oklahoma border. By 1927 it was running concurrently with the newly designated U.S. Highway 66, and was cancelled by 1938.

Related routes

North of Dallas

Dallas, Texas

Dallas is the third-largest city in Texas and the ninth-largest in the United States. The Dallas-Fort Worth Metroplex is the largest metropolitan area in the South and fourth-largest metropolitan area in the United States...

, US 75 was rerouted onto Central Expressway

Central Expressway (Dallas)

Central Expressway is a north–south highway in Dallas, Texas and surrounding areas.- North Central Expressway :The best-known section is the North Central Expressway, a name for a freeway section of U.S. Highway 75 between downtown Dallas and McKinney, Texas...

, one of the first expressway

Controlled-access highway

A controlled-access highway is a highway designed exclusively for high-speed vehicular traffic, with all traffic flow and ingress/egress regulated...

 projects in the United States, in the 1950s. Its original route from Richardson

Richardson, Texas

Richardson is a city in Dallas and Collin Counties in the U.S. state of Texas. As of the 2010 census, the city had a total population of 99,223. In 2011 the population was estimated to be 107,684. Richardson is an affluent inner suburb of Dallas and home of the Telecom Corridor with a high...

 to Howe

Howe, Texas

Howe is a town in Grayson County, Texas, United States. The population was 2,478 at the 2000 census. It is part of the Sherman–Denison Metropolitan Statistical Area-Geography:Howe is located at ....

 (south of Sherman

Sherman, Texas

Sherman is a city in and the county seat of Grayson County, Texas, United States. The city's estimated population as of 2009 was 38,407. It is also one of two principal cities in the Sherman-Denison Metropolitan Statistical Area.-History:...

) was redesignated as State Highway 5.

Counties and junctions

County	Junction	Notes
Montgomery Montgomery County, Texas Montgomery County is a county located in the U.S. state of Texas within the Houston–Sugar Land–Baytown metropolitan area. The county was created by an act of the Congress of the Republic of Texas on December 14, 1837. The county was named for the town of Montgomery, Texas. In 2000, its...	I-45 – Conroe
	SH 105 State Highway 105 (Texas) State Highway 105, or SH 105, is a state highway in the U.S. state of Texas that runs from Brenham to the outskirts of Beaumont. The route was originally proposed in 1933 and took its current routing in 1984.-Route description:...  – Conroe Conroe, Texas Conroe is a suburban city 40 miles north of Houston in the gulf coastal plains/piney woods region of southeast Texas.It is the seat of Montgomery County and falls within the metropolitan area.As of the 2000 U.S...
Walker Walker County, Texas Walker County is a county located in the U.S. state of Texas. In 2010, its population was 67,861. Its county seat is Huntsville.Initially, Walker County was named for Robert J. Walker, a legislator from Mississippi who introduced into the United States Congress the resolution to annex Texas...	SH 150 – New Waverly New Waverly, Texas New Waverly is a city in Walker County, Texas, United States. The population was 950 at the 2000 census.-Geography:New Waverly is located at ....
	SH 19 State Highway 19 (Texas) State Highway 19, or SH 19, runs from Huntsville to Paris in east Texas. It is a two-lane freeway near Huntsville.-History:SH 19 was one of the original 26 Texas state highways proposed in 1917. The original proposal was for it to run from the Texas/Oklahoma border north of Paris to Houston. By...  – Huntsville
	SH 30 State Highway 30 (Texas) State Highway 30, or SH 30, runs from Business SH 6-R in College Station via Roans Prairie to SH 19 in Huntsville. This route was designated in 1961, replacing SH 45...  – Huntsville
	I-45/US 190 – Huntsville Huntsville, Texas Huntsville is a city in and the county seat of Walker County, Texas, United States. The population was 35,508 at the 2010 census. It is the center of the Huntsville micropolitan area....
Madison	US 190/SH 21 State Highway 21 (Texas) 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:...  – Madisonville Madisonville, Texas Madisonville is a city in Madison County, Texas, United States. The population was 4,159 at the 2000 census. It is the county seat of Madison County. Both the City of Madisonville and the County of Madison were named for U.S...
	I-45
	SH OSR State Highway OSR (Texas) State Highway OSR is a state highway in the U.S. state of Texas. The route is the section of the Old San Antonio Road in east central Texas that is maintaned by the Texas Department of Transportation...
Leon	SH 7 State Highway 7 (Texas) State Highway 7 is an east–west state highway that runs from Interstate 35 south of Waco to U.S. Highway 84 about 3 miles west of the Texas-Louisiana state line...  – Centerville Centerville, Texas Centerville is a city in Leon County, Texas, United States. The population was 903 at the 2000 census. It is the county seat of Leon County.Centerville was so named as it is near the geographic center of Leon County...
	US 79 – Buffalo
	SH 164 – Buffalo Buffalo, Texas This article is about the city in Leon County, Texas. A similarly named place exists in Henderson County, Texas, the settlement of John H. Reagan.Buffalo is a city in Leon County, Texas, United States...
Freestone Freestone County, Texas Freestone County is a county located in the U.S. state of Texas. As of 2000, the population was 17,867. Its county seat is Fairfield.-Geography:...	SH 179 – Dew Dew, Texas Dew is an unincorporated community in southern Freestone County, Texas, United States. It is located at the junction of State Highway 75 and Farm to Market Road 489, nine miles south of Fairfield, the county seat....
	US 84 – Fairfield Fairfield, Texas Fairfield is a city in Freestone County, Texas, United States. The population was 3,094 at the 2000 census. It is the county seat of Freestone County.-Geography:Fairfield is located at ....
Navarro	I-45 at Streetman Streetman, Texas Streetman is a town in Freestone and Navarro Counties in the U.S. state of Texas. In 1990 the population was 260. The population dropped to 203 in 2000.-Geography:...