List of Interstate Highways in Texas
Encyclopedia
The Interstate Highways in Texas are all owned and maintained by the U.S. state of Texas
. The Texas Department of Transportation
(TxDOT) is the state agency responsible for the day-to-day maintenance and operations of the Interstate Highways
in Texas. The Interstate Highway System in Texas covers 3233.4 miles (5,203.6 km) and consists of nine primary routes, six auxiliary routes and the splitting of Interstate 35
(I-35) into two branches, I-35E
and I-35W
, that provide access to both Fort Worth
and Dallas
. The Interstate Highway with the longest segment in Texas is I-10
at 878.6 miles (1,414 km). The shortest Interstate Highway in the state is I-110
at 0.9 miles (1.4 km).
The construction of the Interstate Highway System in Texas actually began well before these routes were designated as Interstate Highways. A 50 miles (80 km) stretch of the Gulf Freeway (I-45) between Galveston and Houston was opened in 1951, eight years before it was designated I-45. It was also the first urban expressway in Texas. In 1962, 43 miles (69 km) of I-35 opened in Bexar County
, the first section of Interstate Highway to open from county line to county line in a large metropolitan area. Portions of I-10 west of San Antonio
took much longer to complete due to the vast open spaces and lack of nearby labor. The majority of the construction of this section of I-10 occurred in the 1970s and 1980s and was complete by the early 1990s. The section east of San Antonio was completed 20 years earlier in 1972. The opening of a 6 miles (10 km) section of I-27 in 1992 completed the Interstate Highway System in Texas.
Planning is ongoing for a proposed extension of I-69
southward from its current terminus in Indiana
through Texas to the United States – Mexico border. If built, I-69 will extend about 650 miles (1,046.1 km) across Texas, from the Louisiana
state line in the Texarkana-Shreveport area to South Texas.
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...
. The Texas Department of Transportation
Texas Department of Transportation
The Texas Department of Transportation is a governmental agency in the U.S. state of Texas. Its stated mission is to "work cooperatively to provide safe, effective and efficient movement of people and goods" throughout the state...
(TxDOT) is the state agency responsible for the day-to-day maintenance and operations of the Interstate Highways
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...
in Texas. The Interstate Highway System in Texas covers 3233.4 miles (5,203.6 km) and consists of nine primary routes, six auxiliary routes and the splitting of Interstate 35
Interstate 35 in Texas
Interstate 35 in Texas is a major north–south Interstate Highway running from Laredo near the United States-Mexico border to the Red River north of Gainesville where it crosses into Oklahoma. Along its route, it passes through the cities of San Antonio, Austin, and Waco before it splits into two...
(I-35) into two branches, I-35E
Interstate 35E (Texas)
Interstate 35E , an Interstate Highway, is the eastern half of Interstate 35 where it splits to serve different cities in Texas. I-35 splits into two branch routes, I-35W and I-35E at Hillsboro. I-35E runs north for , maintaining I-35's sequence of exit numbers. It runs through Dallas before...
and I-35W
Interstate 35W (Texas)
Interstate 35W , an Interstate Highway, is the western half of Interstate 35 where it splits to serve different cities in Texas. I-35 splits into two branch routes, I-35W and I-35E at Hillsboro. I-35W runs north for , carrying its own separate sequence of exit numbers. It runs through Fort Worth...
, that provide access to both Fort Worth
Fort Worth, Texas
Fort Worth is the 16th-largest city in the United States of America and the fifth-largest city in the state of Texas. Located in North Central Texas, just southeast of the Texas Panhandle, the city is a cultural gateway into the American West and covers nearly in Tarrant, Parker, Denton, and...
and 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...
. The Interstate Highway with the longest segment in Texas is I-10
Interstate 10 in Texas
Interstate 10 is the major east–west Interstate Highway in the Southern United States. In the U.S. state of Texas, it runs east from El Paso, near the border with New Mexico, through San Antonio and Houston to the border with Louisiana in Orange, Texas....
at 878.6 miles (1,414 km). The shortest Interstate Highway in the state is I-110
Interstate 110 (Texas)
Interstate 110 is a spur route in El Paso extending from Interstate 10, south along U.S. Highway 54, turns west then turns south into Mexico. Interstate 110 provides access from Interstate 10 to the Bridge of the Americas , which spans the Rio Grande to connect with Avenida Abraham Lincoln in...
at 0.9 miles (1.4 km).
The construction of the Interstate Highway System in Texas actually began well before these routes were designated as Interstate Highways. A 50 miles (80 km) stretch of the Gulf Freeway (I-45) between Galveston and Houston was opened in 1951, eight years before it was designated I-45. It was also the first urban expressway in Texas. In 1962, 43 miles (69 km) of I-35 opened in Bexar County
Bexar County, Texas
As of the census of 2000, there were 1,392,931 people, 488,942 households, and 345,681 families residing in the county. The population density was 1,117 people per square mile . There were 521,359 housing units at an average density of 418 per square mile...
, the first section of Interstate Highway to open from county line to county line in a large metropolitan area. Portions of I-10 west of San Antonio
San Antonio, Texas
San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,...
took much longer to complete due to the vast open spaces and lack of nearby labor. The majority of the construction of this section of I-10 occurred in the 1970s and 1980s and was complete by the early 1990s. The section east of San Antonio was completed 20 years earlier in 1972. The opening of a 6 miles (10 km) section of I-27 in 1992 completed the Interstate Highway System in Texas.
Planning is ongoing for a proposed extension of I-69
Interstate 69 in Texas
Interstate 69 in the U.S. state of Texas is a proposed extension of that existing Interstate Highway that would pass through the eastern part of the state.-Route description:In Texas, I-69 will enter from Louisiana to the east and intersect with the U.S...
southward from its current terminus in Indiana
Indiana
Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...
through Texas to the United States – Mexico border. If built, I-69 will extend about 650 miles (1,046.1 km) across Texas, from the Louisiana
Louisiana
Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...
state line in the Texarkana-Shreveport area to South Texas.
Primary Interstate Highways
| Highway | Location | Length | Description | Date established | Notes |
|---|---|---|---|---|---|
 Interstate 10 in Texas Interstate 10 is the major east–west Interstate Highway in the Southern United States. In the U.S. state of Texas, it runs east from El Paso, near the border with New Mexico, through San Antonio and Houston to the border with Louisiana in Orange, Texas.... |
El Paso, Hudspeth Hudspeth County, Texas Hudspeth County is a county located in the U.S. state of Texas. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. As of 2000, the population was 3,344. By 2010, the population had increased to 3,476. Its county seat is Sierra Blanca. The largest city is Fort Hancock... , Culberson Culberson County, Texas Culberson County is a county located in the U.S. state of Texas. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. In 2000, its population was 2,975. Culberson was founded in 1911. It is named for David B. Culberson, a lawyer and Confederate soldier in the American... , Jeff Davis Jeff Davis County, Texas Jeff Davis County is a county in the U.S. state of Texas. It is named for Jefferson Davis, the president of the Confederate States of America. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. In 2000, its population was 2,207, and 2,258 by 2009... , Reeves Reeves County, Texas Reeves County is a county located in the US state of Texas. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. In 2000, its population was 13,137. Its seat is Pecos. Reeves County is named for George R. Reeves, a Texas state legislator and colonel in the... , Pecos Pecos County, Texas Pecos County is a county located in Texas which is named for the Pecos River. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. In 2000, its population was 16,809. The county seat is Fort Stockton.... , Crockett, Sutton, Kimble Kimble County, Texas Kimble County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2000, its population was 4,468. Its county seat is Junction. Kimble is named for George C. Kimble, who died at the Battle of the Alamo.-Geography:... , Kerr Kerr County, Texas Kerr County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2010, its population was 49,625. Its county seat is Kerrville. Kerr County was named by Joshua D. Brown for his fellow Kentucky native, James Kerr, a congressman of the Republic of Texas... , Gillespie Gillespie County, Texas Gillespie County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2010, its population was 24,837. It is located in the heart of the Texas Hill Country. Gillespie is named for Robert Addison Gillespie, who came to Texas in 1837. He was a Texas Ranger, an Indian fighter, a... , Kendall Kendall County, Texas Kendall County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2008 census, its population was 32,886. Its seat is Boerne.... , Bexar Bexar County, Texas As of the census of 2000, there were 1,392,931 people, 488,942 households, and 345,681 families residing in the county. The population density was 1,117 people per square mile . There were 521,359 housing units at an average density of 418 per square mile... , Guadalupe Guadalupe County, Texas Guadalupe County is a county located in the U.S. state of Texas. In 2000, its population was 89,023. It is named for the Guadalupe River. The seat of the county is Seguin. It was founded in 1846.... , Caldwell Caldwell County, Texas Caldwell County is a county located in the U.S. state of Texas. It is part of the Austin-Round Rock metropolitan area. In 2000, the population was 32,194. Its county seat is Lockhart... , Gonzales Gonzales County, Texas Gonzales County is a county located in the U.S. state of Texas. In 2000, its population was 18,628. It is named for its seat, the city of Gonzales.-History Timeline:* Paleo-Indians Hunter-gatherers, and later Coahuiltecan, Tonkawa, Karankawa... , Fayette Fayette County, Texas Fayette County is a county located in the U.S. state of Texas. As of 2000, the population was 21,804. Its county seat is La Grange. Fayette is named for the Marquis de la Fayette, a French nobleman who became an American Revolutionary War hero... , Colorado, Austin Austin County, Texas Austin County is a county located in the U.S. state of Texas adjacent to the Houston–Sugar Land–Baytown metropolitan area. The population was 28,417 at the 2010 census. Its county seat is Bellville. Austin County is named for Stephen F... , Waller, Harris Harris County, Texas As of the 2010 Census, the population of the county was 4,092,459, White Americans made up 56.6% of Harris County's population; non-Hispanic whites represented 33.0% of the population. Black Americans made up 18.9% of the population. Native Americans made up 0.7% of Harris County's population... , Chambers, Jefferson Jefferson County, Texas Jefferson County is a county located in the state of Texas, United States. As of 2000, the population was 252,051. Its county seat is Beaumont, and it is named for the former U.S... and Orange Orange County, Texas Orange County is one of 254 counties of the State of Texas and its county seat is the city of Orange, Texas. In the year 2000, the population of Orange County was about 85,000. Orange County is the county in the very southeastern corner of Texas, with a boundary with Louisiana and a seacoast on the... counties |
miles (1,414.0 km) | I-10 enters the state from New Mexico New Mexico New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S... northwest of El Paso El Paso, Texas El Paso, is a city in and the county seat of El Paso County, Texas, United States, and lies in far West Texas. In the 2010 census, the city had a population of 649,121. It is the sixth largest city in Texas and the 19th largest city in the United States... , passing through rural West Texas West Texas West Texas is a vernacular term applied to a region in the southwestern quadrant of the United States that primarily encompasses the arid and semi-arid lands in the western portion of the state of Texas.... on its way to San Antonio San Antonio, Texas San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,... , where it has junctions with I-35 and I-37. It continues east to Houston Houston, Texas Houston is the fourth-largest city in the United States, and the largest city in the state of Texas. According to the 2010 U.S. Census, the city had a population of 2.1 million people within an area of . Houston is the seat of Harris County and the economic center of , which is the ... , where it has a junction with I-45, then enters Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties... near Orange Orange, Texas Orange is a city in Orange County, Texas, United States. As of the 2000 census, the city population was 18,643. It is the county seat of Orange County, and is the easternmost city in Texas. Located on the Sabine River at the border with Louisiana, it is part of the Beaumont–Port Arthur... . I-10 is the state's longest Interstate Highway as well as its southernmost east-west Interstate Highway. It is also the longest continuous untolled freeway under a single authority in North America. |
1959 | |
 Interstate 20 in Texas Interstate 20 in Texas is a major east–west Interstate Highway in the Southern United States, running east from a junction with Interstate 10 east of Kent, Texas, through the Dallas-Fort Worth Metroplex to the border with Louisiana near Waskom, Texas... |
Reeves Reeves County, Texas Reeves County is a county located in the US state of Texas. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. In 2000, its population was 13,137. Its seat is Pecos. Reeves County is named for George R. Reeves, a Texas state legislator and colonel in the... , Ward, Crane, Ector, Midland, Martin, Howard, Mitchell, Nolan, Taylor Taylor County, Texas As of the census of 2000, there were 126,555 people, 47,274 households, and 32,524 families residing in the county. The population density was 138 people per square mile . There were 52,056 housing units at an average density of 57 per square mile... , Callahan Callahan County, Texas *Baird*Belle Plain*Callahan City*Clyde*Cottonwood*Cross Plains*Eula*Putnam-See also:*National Register of Historic Places listings in Callahan County, Texas-External links:* at the University of Texas*... , Eastland Eastland County, Texas *Carbon*Cisco*Desdemona, a ghost town*Eastland*Gorman*Mangum*Olden*Ranger*Rising Star*Romney-See also:*National Register of Historic Places listings in Eastland County, Texas*Santa Claus Bank Robbery-External links:** at the University of Texas*... , Erath Erath County, Texas Erath County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2000, its population was 33,001. It is named for George Bernard Erath, an early surveyor and a soldier at the Battle of San Jacinto. The seat of the county is Stephenville.... , Palo Pinto Palo Pinto County, Texas As of the census of 2000, there were 27,026 people, 10,594 households, and 7,447 families residing in the county. The population density was 28 people per square mile . There were 14,102 housing units at an average density of 15 per square mile... , Parker Parker County, Texas As of the census of 2003, there were 98,495 people, 31,131 households, and 24,313 families residing in the county. The population density was 98 people per square mile . There were 34,084 housing units at an average density of 38 per square mile... , Tarrant Tarrant County, Texas Tarrant County is a county located in the U.S. state of Texas. As of the 2010 U.S. Census, it had a population of 1,809,034. Its county seat is Fort Worth. Tarrant County is the sixteenth most populous county in the United States and the third most populous in Texas. The county is named in honor... , Dallas Dallas County, Texas As of the census of 2000, there were 2,218,899 people, 807,621 households, and 533,837 families residing in the county. The population density was 2,523 people per square mile . There were 854,119 housing units at an average density of 971/sq mi... , Kaufman Kaufman County, Texas As of the census of 2000, there were 71,313 people, 24,367 households, and 19,225 families residing in the county. The population density was 91/sq mi . There were 26,133 housing units at an average density of 33/sq mi... , Van Zandt Van Zandt County, Texas As of the census of 2000, there were 48,140 people, 18,195 households, and 13,664 families residing in the county. The population density was 57 people per square mile . There were 20,896 housing units at an average density of 25 per square mile... , Smith Smith County, Texas As of the census of 2000, there were 174,706 people, 65,692 households, and 46,904 families residing in the county. The population density was 188 people per square mile . There were 71,701 housing units at an average density of 77 per square mile... , Gregg Gregg County, Texas There were 42,687 households out of which 33.50% had children under the age of 18 living with them, 52.00% were married couples living together, 13.50% had a female householder with no husband present, and 30.50% were non-families. 26.10% of all households were made up of individuals and 10.50% had... and Harrison Harrison County, Texas Harrison County is a county of the U.S. state of Texas. In 2000, its population was 62,110. It is named for Jonas Harrison, a lawyer and Texas revolutionary. It is located in the Ark-La-Tex region... counties |
miles (1,023.7 km) | I-20 begins at exit 186 on I-10 in West Texas West Texas West Texas is a vernacular term applied to a region in the southwestern quadrant of the United States that primarily encompasses the arid and semi-arid lands in the western portion of the state of Texas.... and heads towards the northeast. The highway is a major east-west corridor through the Dallas–Fort Worth Metroplex, the Dallas and Fort Worth combined metropolitan areas, where it has junctions with I-30, I-35W, I-35E and I-45. I-20 passes through East Texas East Texas East Texas is a distinct geographic and ecological area in the U.S. state of Texas.According to the Handbook of Texas, the East Texas area "may be separated from the rest of Texas roughly by a line extending from the Red River in north central Lamar County southwestward to east central Limestone... before it enters Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties... east of Marshall Marshall, Texas Marshall is a city in Harrison County in the northeastern corner of Texas. Marshall is a major cultural and educational center in East Texas and the tri-state area. As of the 2010 U.S. Census, the population of Marshall was about 23,523... . |
1959 | |
 |
Lubbock, Hale Hale County, Texas Hale County is a county located in the U.S. state of Texas. In 2000, its population was 36,602. It was organized in 1888, and is named for Lt. John C. Hale, a hero of the Battle of San Jacinto. The seat of the county is Plainview. It is home of the noted former Hale County Judge, Judge Bill... , Swisher Swisher County, Texas Swisher County is a county located in the U.S. state of Texas. In 2000, its population was 8,378. Its seat is Tulia. The county is named for James G. Swisher, a soldier of the Texas Revolution and signer of the Texas Declaration of Independence... , Randall and Potter counties |
miles (199.8 km) | I-27 begins at Loop 289 Texas State Highway Loop 289 Loop 289 is a multi-lane beltway servicing Lubbock as a freeway. The highway serves as the southern end for I-27 on the south side of the city. Loop 289 as spur that splits off that connects to US 62/ US 82, called Spur 327, on the southwest side of the city... in southern Lubbock Lubbock, Texas Lubbock is a city in and the county seat of Lubbock County, Texas, United States. The city is located in the northwestern part of the state, a region known historically as the Llano Estacado, and the home of Texas Tech University and Lubbock Christian University... and heads north in the Texas Panhandle Texas Panhandle The Texas Panhandle is a region of the U.S. state of Texas consisting of the northernmost 26 counties in the state. The panhandle is a rectangular area bordered by New Mexico to the west and Oklahoma to the north and east... . It ends at exit 70 on I-40 in 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... . |
1969 | |
 |
Parker Parker County, Texas As of the census of 2003, there were 98,495 people, 31,131 households, and 24,313 families residing in the county. The population density was 98 people per square mile . There were 34,084 housing units at an average density of 38 per square mile... , Tarrant Tarrant County, Texas Tarrant County is a county located in the U.S. state of Texas. As of the 2010 U.S. Census, it had a population of 1,809,034. Its county seat is Fort Worth. Tarrant County is the sixteenth most populous county in the United States and the third most populous in Texas. The county is named in honor... , Dallas Dallas County, Texas As of the census of 2000, there were 2,218,899 people, 807,621 households, and 533,837 families residing in the county. The population density was 2,523 people per square mile . There were 854,119 housing units at an average density of 971/sq mi... , Rockwall Rockwall County, Texas As of the census of 2000, there were 43,080 people, 14,530 households, and 11,972 families residing in the county. The population density was 334 people per square mile . There were 15,351 housing units at an average density of 119 per square mile... , Hunt Hunt County, Texas As of the census of 2000, there were 76,596 people, 28,742 households, and 20,521 families residing in the county. The population density was 91 people per square mile . There were 32,490 housing units at an average density of 39 per square mile... , Hopkins Hopkins County, Texas *Brashear*Dike*Como*Cumby*Gafford*Pickton*Saltillo*Sulphur Bluff*Sulphur Springs*Tira-See also:*National Register of Historic Places listings in Hopkins County, Texas-External links:*... , Franklin Franklin County, Texas As of the census of 2000, there were 9,458 people, 3,754 households, and 2,732 families residing in the county. The population density was 33 people per square mile . There were 5,132 housing units at an average density of 18 per square mile... , Titus Titus County, Texas As of the census of 2000, there were 28,118 people, 9,552 households, and 7,154 families residing in the county. The population density was 68 people per square mile . There were 10,675 housing units at an average density of 26 per square mile... , Morris Morris County, Texas As of the census of 2000, there were 13,048 people, 5,215 households, and 3,749 families residing in the county. The population density was 51 people per square mile . There were 6,017 housing units at an average density of 24 per square mile... and Bowie Bowie County, Texas Bowie County is a county located in the U.S. state of Texas. It is part of the Texarkana, Texas - Texarkana, Arkansas, Metropolitan Statistical Area. As of 2000, the population was 89,306. Its legal county seat is Boston, though its courthouse is located in New Boston... counties |
miles (360.1 km) | I-30 begins at exit 421 on I-20 in the western portions of the Dallas–Fort Worth Metroplex, the Dallas and Fort Worth combined metropolitan areas. As it heads east through the Metroplex, it has junctions with I-35W, I-35E and I-45. After leaving the Metroplex, the highway heads towards the east-northeast and enters Arkansas Arkansas Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River... at Texarkana Texarkana, Texas Texarkana is a city in Bowie County, Texas, United States. It effectively functions as one half of a city which crosses a state line — the other half, the city of Texarkana, Arkansas, lies on the other side of State Line Avenue... . |
1959 | |
 Interstate 35 in Texas Interstate 35 in Texas is a major north–south Interstate Highway running from Laredo near the United States-Mexico border to the Red River north of Gainesville where it crosses into Oklahoma. Along its route, it passes through the cities of San Antonio, Austin, and Waco before it splits into two... |
Webb Webb County, Texas Webb County is a county located in the U.S. state of Texas. The official 2010 population for the county is 250,304. In 2000, its population was 193,117, and in 2006 its population had been estimated to have reached to 231,470. Its county seat is Laredo... , La Salle, Frio, Medina, Atascosa, Bexar Bexar County, Texas As of the census of 2000, there were 1,392,931 people, 488,942 households, and 345,681 families residing in the county. The population density was 1,117 people per square mile . There were 521,359 housing units at an average density of 418 per square mile... , Guadalupe Guadalupe County, Texas Guadalupe County is a county located in the U.S. state of Texas. In 2000, its population was 89,023. It is named for the Guadalupe River. The seat of the county is Seguin. It was founded in 1846.... , Comal Comal County, Texas Comal County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2010, its population was 108,472. Its seat is New Braunfels.Comal County is part of the San Antonio Metropolitan Statistical Area.-History Timeline:... , Hays Hays County, Texas Hays County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2010, its official population had reached 157,107. It is named for John Coffee Hays, a Texas Ranger and Mexican-American War officer. The seat of the county is San Marcos.... , Travis Travis County, Texas As of 2009, the U.S. census estimates there were 1,026,158 people, 320,766 households, and 183,798 families residing in the county. The population density was 821 people per square mile . There were 335,881 housing units at an average density of 340 per square mile... , Williamson Williamson County, Texas Williamson County is a county located on both the Edwards Plateau to the west, consisting of rocky terrain and hills, and Blackland Prairies in the east consising of rich, fertile farming land, The two areas are roughly bisected by Interstate 35... , Bell Bell County, Texas Bell County is a county located in the U.S. state of Texas. Bell County was founded in 1850. It is part of the Killeen–Temple–Fort Hood Metropolitan Statistical Area. In 2000, the county's population was 237,974; in 2010 the U.S. Census Bureau reported that its population had reached... , Falls Falls County, Texas Falls County is a county located in the U.S. state of Texas. In 2000, its population was 18,576. In 2003, the population of the county was estimated to be 17,926. It is named for the waterfalls on the Brazos River, which can be found at the Falls On The Brazos Park, a campsite located only a few... , McLennan McLennan County, Texas McLennan County is a county located on the Edwards Plateau in Central Texas. In 2000, its population was 213,517; in 2008 the U.S. Census Bureau estimated its population to be 230,213. Its seat is Waco. The county is named for Neil McLennan, an early settler.... , Hill, Denton Denton County, Texas Denton County is a county located in the U.S. state of Texas. In 2000, its population was 432,976; in 2009 the estimated population had reached 628,300. Part of the Dallas – Fort Worth Metroplex, it is one of the fastest-growing counties in the United States. The county seat is Denton. The county... and Cooke Cooke County, Texas As of the census of 2000, there were 36,363 people, 13,643 households, and 10,000 families residing in the county. The population density was 42 people per square mile . There were 15,061 housing units at an average density of 17 per square mile... counties |
miles (655.3 km) | I-35 begins at the United States–Mexico border United States–Mexico border The United States–Mexico border is the international border between the United States and Mexico. It runs from Imperial Beach, California, and Tijuana, Baja California, in the west to Matamoros, Tamaulipas, and Brownsville, Texas, in the east, and traverses a variety of terrains, ranging from major... in Laredo Laredo, Texas Laredo is the county seat of Webb County, Texas, United States, located on the north bank of the Rio Grande in South Texas, across from Nuevo Laredo, Tamaulipas, Mexico. According to the 2010 census, the city population was 236,091 making it the 3rd largest on the United States-Mexican border,... and heads north towards San Antonio San Antonio, Texas San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,... . In San Antonio, it intersects I-10 and I-37 before heading north to Austin Austin, Texas Austin is the capital city of the U.S. state of :Texas and the seat of Travis County. Located in Central Texas on the eastern edge of the American Southwest, it is the fourth-largest city in Texas and the 14th most populous city in the United States. It was the third-fastest-growing large city in... , the state capital. North of Hillsboro Hillsboro, Texas Hillsboro is a city in and the county seat of Hill County in Central Texas. The population was 8,232 at the 2000 census.Hillsboro, located on Interstate 35 where I-35E and I-35W meet south of the Dallas-Fort Worth Metroplex, is the primary center for trade and commerce in Hill County... , the highway splits into two branches, I-35W which heads to Fort Worth Fort Worth, Texas Fort Worth is the 16th-largest city in the United States of America and the fifth-largest city in the state of Texas. Located in North Central Texas, just southeast of the Texas Panhandle, the city is a cultural gateway into the American West and covers nearly in Tarrant, Parker, Denton, and... and I-35E that heads to 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... . The two branches reunite in Denton Denton, Texas The city of Denton is the county seat of Denton County, Texas in the United States. Its population was 119,454 according to the 2010 U.S. Census, making it the eleventh largest city in the Dallas/Fort Worth Metroplex... and I-35 heads north, entering Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... north of Gainesville Gainesville, Texas Gainesville is a city in and the county seat of Cooke County, Texas, United States. The population was 15,538 at the 2000 census.-History:... . |
1959 | |
 Interstate 35E (Texas) Interstate 35E , an Interstate Highway, is the eastern half of Interstate 35 where it splits to serve different cities in Texas. I-35 splits into two branch routes, I-35W and I-35E at Hillsboro. I-35E runs north for , maintaining I-35's sequence of exit numbers. It runs through Dallas before... |
Hill, Ellis Ellis County, Texas As of the census of 2000, there were 111,360 people, 37,020 households, and 29,653 families residing in the county. The population density was 118 people per square mile . There were 39,071 housing units at an average density of 42 per square mile... , Dallas Dallas County, Texas As of the census of 2000, there were 2,218,899 people, 807,621 households, and 533,837 families residing in the county. The population density was 2,523 people per square mile . There were 854,119 housing units at an average density of 971/sq mi... and Denton Denton County, Texas Denton County is a county located in the U.S. state of Texas. In 2000, its population was 432,976; in 2009 the estimated population had reached 628,300. Part of the Dallas – Fort Worth Metroplex, it is one of the fastest-growing counties in the United States. The county seat is Denton. The county... counties |
miles (155.7 km) | I-35E is the eastern and less direct branch of I-35 from Hillsboro Hillsboro, Texas Hillsboro is a city in and the county seat of Hill County in Central Texas. The population was 8,232 at the 2000 census.Hillsboro, located on Interstate 35 where I-35E and I-35W meet south of the Dallas-Fort Worth Metroplex, is the primary center for trade and commerce in Hill County... to Denton Denton, Texas The city of Denton is the county seat of Denton County, Texas in the United States. Its population was 119,454 according to the 2010 U.S. Census, making it the eleventh largest city in the Dallas/Fort Worth Metroplex... ; it passes through 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... , where it intersects I-20 and I-30. |
1959 | |
 Interstate 35W (Texas) Interstate 35W , an Interstate Highway, is the western half of Interstate 35 where it splits to serve different cities in Texas. I-35 splits into two branch routes, I-35W and I-35E at Hillsboro. I-35W runs north for , carrying its own separate sequence of exit numbers. It runs through Fort Worth... |
Hill, Johnson Johnson County, Texas As of the census of 2000, there were 126,811 people, 43,636 households, and 34,428 families residing in the county. The population density was 174 people per square mile . There were 46,269 housing units at an average density of 63 per square mile... , Tarrant Tarrant County, Texas Tarrant County is a county located in the U.S. state of Texas. As of the 2010 U.S. Census, it had a population of 1,809,034. Its county seat is Fort Worth. Tarrant County is the sixteenth most populous county in the United States and the third most populous in Texas. The county is named in honor... and Denton Denton County, Texas Denton County is a county located in the U.S. state of Texas. In 2000, its population was 432,976; in 2009 the estimated population had reached 628,300. Part of the Dallas – Fort Worth Metroplex, it is one of the fastest-growing counties in the United States. The county seat is Denton. The county... counties |
miles (137.1 km) | I-35W is the western and more direct branch of I-35 from Hillsboro Hillsboro, Texas Hillsboro is a city in and the county seat of Hill County in Central Texas. The population was 8,232 at the 2000 census.Hillsboro, located on Interstate 35 where I-35E and I-35W meet south of the Dallas-Fort Worth Metroplex, is the primary center for trade and commerce in Hill County... to Denton Denton, Texas The city of Denton is the county seat of Denton County, Texas in the United States. Its population was 119,454 according to the 2010 U.S. Census, making it the eleventh largest city in the Dallas/Fort Worth Metroplex... ; it passes through Fort Worth Fort Worth, Texas Fort Worth is the 16th-largest city in the United States of America and the fifth-largest city in the state of Texas. Located in North Central Texas, just southeast of the Texas Panhandle, the city is a cultural gateway into the American West and covers nearly in Tarrant, Parker, Denton, and... , where it intersects I-20 and I-30. |
1959 | |
 |
Nueces, San Patricio, Live Oak, Atascosa and Bexar Bexar County, Texas As of the census of 2000, there were 1,392,931 people, 488,942 households, and 345,681 families residing in the county. The population density was 1,117 people per square mile . There were 521,359 housing units at an average density of 418 per square mile... counties |
miles (230.1 km) | I-37 begins in Corpus Christi Corpus Christi, Texas Corpus Christi is a coastal city in the South Texas region of the U.S. state of Texas. The county seat of Nueces County, it also extends into Aransas, Kleberg, and San Patricio counties. The MSA population in 2008 was 416,376. The population was 305,215 at the 2010 census making it the... near the Gulf Coast and heads towards the north-northwest. It intersects I-10 before it ends at exit 158 on I-35 in San Antonio San Antonio, Texas San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,... . |
1959 | |
 Interstate 40 in Texas In the U.S. state of Texas, Interstate 40 runs east–west through the panhandle in the northwest part of the state. The only large city it passes through is Amarillo, where it meets the north end of Interstate 27.-History:... |
Deaf Smith, Oldham, Potter, Carson Carson County, Texas Carson County is a county located in the U.S. state of Texas. It is part of the Amarillo metropolitan area. In 2000, its population was 6,516. Carson is named for Samuel Price Carson, the first secretary of state of the Republic of Texas. The seat of the county is Panhandle. It was founded in... , Gray, Donley Donley County, Texas Donley County is a county located in the U.S. state of Texas. In 2000, its population was 3,828. It is named for Stockton P. Donley, a frontier lawyer. Its county seat is Clarendon.... and Wheeler counties |
miles (285.0 km) | I-40 crosses the Texas Panhandle Texas Panhandle The Texas Panhandle is a region of the U.S. state of Texas consisting of the northernmost 26 counties in the state. The panhandle is a rectangular area bordered by New Mexico to the west and Oklahoma to the north and east... from New Mexico New Mexico New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S... to Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , and has a junction with I-27 in 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... . The alignment of I-40 is the approximate alignment of the historic U.S. Highway 66 (US 66). |
1959 | |
 Interstate 44 in Texas In the U.S. state of Texas, Interstate 44 has a short but regionally important stretch, connecting Wichita Falls with Oklahoma. Its entire length is concurrent with U.S. Highway 277 and U.S. Highway 281. I-44 provides access to downtown Wichita Falls and Sheppard Air Force Base. The Interstate... |
Wichita County Wichita County, Texas As of the census of 2000, there were 131,664 people, 48,441 households, and 32,891 families residing in the county. The population density was 210 people per square mile . There were 53,304 housing units at an average density of 85 per square mile... |
miles (23.8 km) | I-44 begins in Wichita Falls Wichita Falls, Texas Wichita Falls is a city in and the county seat of Wichita County, Texas, United States, United States. Wichita Falls is the principal city of the Wichita Falls Metropolitan Statistical Area, which encompasses all of Archer, Clay and Wichita counties. According to the U.S. Census estimate of 2010,... and heads north to Oklahoma. |
1982 | |
 |
Galveston Galveston County, Texas Galveston County is a county located in the U.S. state of Texas within the Houston–Sugar Land–Baytown metropolitan area. As of the 2010 U.S. Census, the population was 291,309. Its county seat is Galveston. League City is the largest city in Galveston County in terms of population; between... , Harris Harris County, Texas As of the 2010 Census, the population of the county was 4,092,459, White Americans made up 56.6% of Harris County's population; non-Hispanic whites represented 33.0% of the population. Black Americans made up 18.9% of the population. Native Americans made up 0.7% of Harris County's population... , 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... , 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... , Madison, Leon, 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:... , Navarro, Ellis Ellis County, Texas As of the census of 2000, there were 111,360 people, 37,020 households, and 29,653 families residing in the county. The population density was 118 people per square mile . There were 39,071 housing units at an average density of 42 per square mile... and Dallas Dallas County, Texas As of the census of 2000, there were 2,218,899 people, 807,621 households, and 533,837 families residing in the county. The population density was 2,523 people per square mile . There were 854,119 housing units at an average density of 971/sq mi... counties |
miles (458.5 km) | I-45 begins in Galveston Galveston, Texas Galveston is a coastal city located on Galveston Island in the U.S. state of Texas. , the city had a total population of 47,743 within an area of... at the Gulf Coast and heads north intersecting I-10 in Houston Houston, Texas Houston is the fourth-largest city in the United States, and the largest city in the state of Texas. According to the 2010 U.S. Census, the city had a population of 2.1 million people within an area of . Houston is the seat of Harris County and the economic center of , which is the ... . It passes through East Texas East Texas East Texas is a distinct geographic and ecological area in the U.S. state of Texas.According to the Handbook of Texas, the East Texas area "may be separated from the rest of Texas roughly by a line extending from the Red River in north central Lamar County southwestward to east central Limestone... and intersects I-20 before ending at exit 46 on I-30 in 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... . |
1959 |
Auxiliary Interstate Highways
| Highway | Location | Length | Description | Date established | Notes |
|---|---|---|---|---|---|
 Interstate 110 (Texas) Interstate 110 is a spur route in El Paso extending from Interstate 10, south along U.S. Highway 54, turns west then turns south into Mexico. Interstate 110 provides access from Interstate 10 to the Bridge of the Americas , which spans the Rio Grande to connect with Avenida Abraham Lincoln in... |
El Paso County | 0.9 miles (1.4 km) | I-110 is a spur Spur route A spur route is a short road forming a branch from a longer, more important route . A bypass or beltway is never considered a true spur route as it typically reconnects with the major road... of I-10 at exit 22B in El Paso El Paso, Texas El Paso, is a city in and the county seat of El Paso County, Texas, United States, and lies in far West Texas. In the 2010 census, the city had a population of 649,121. It is the sixth largest city in Texas and the 19th largest city in the United States... . It connects I-10 to the Bridge of the Americas, the entry point into Ciudad Juárez Ciudad Juárez Ciudad Juárez , officially known today as Heroica Ciudad Juárez, but abbreviated Juárez and formerly known as El Paso del Norte, is a city and seat of the municipality of Juárez in the Mexican state of Chihuahua. Juárez's estimated population is 1.5 million people. The city lies on the Rio Grande... , Mexico. |
1967 | |
 |
Dallas County Dallas County, Texas As of the census of 2000, there were 2,218,899 people, 807,621 households, and 533,837 families residing in the county. The population density was 2,523 people per square mile . There were 854,119 housing units at an average density of 971/sq mi... |
1.4 miles (2.3 km) | I-345 is a spur Spur route A spur route is a short road forming a branch from a longer, more important route . A bypass or beltway is never considered a true spur route as it typically reconnects with the major road... beginning at the northern terminus of I-45. The spur is a continuation of I-45, and the highway continues as US 75 beyond the northern terminus of I-345. It provides a connecting route from I-45 to Spur 366 and US 75 in 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... . |
1964 | |
 |
Bexar County Bexar County, Texas As of the census of 2000, there were 1,392,931 people, 488,942 households, and 345,681 families residing in the county. The population density was 1,117 people per square mile . There were 521,359 housing units at an average density of 418 per square mile... |
49.5 miles (79.7 km) | I-410, also known as the John Connally John Connally John Bowden Connally, Jr. , was an influential American politician, serving as the 39th governor of Texas, Secretary of the Navy under President John F. Kennedy, and as Secretary of the Treasury under President Richard M. Nixon. While he was Governor in 1963, Connally was a passenger in the car in... Loop, is a loop Loop route A loop route is a highway or other major road that extends out from a typically longer, more important parents road to enter and circle a large city. A loop can function as a bypass for through traffic and also to service outlying suburbs.... of I-10 around the city of San Antonio San Antonio, Texas San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,... . It also intersects I-35 and I-37. |
1959 | |
 Interstate 610 (Texas) Interstate 610 is a freeway that forms a forty-two-mile loop around the downtown sector of city of Houston, Texas. Interstate 610, colloquially known as "The Loop", "Loop 610", "The 610 Loop", or just "610", traditionally marks the border between the inner city of Houston and its surrounding areas... |
Harris County Harris County, Texas As of the 2010 Census, the population of the county was 4,092,459, White Americans made up 56.6% of Harris County's population; non-Hispanic whites represented 33.0% of the population. Black Americans made up 18.9% of the population. Native Americans made up 0.7% of Harris County's population... |
38 miles (61.2 km) | I-610 is a loop Loop route A loop route is a highway or other major road that extends out from a typically longer, more important parents road to enter and circle a large city. A loop can function as a bypass for through traffic and also to service outlying suburbs.... of I-10 around the city of Houston Houston, Texas Houston is the fourth-largest city in the United States, and the largest city in the state of Texas. According to the 2010 U.S. Census, the city had a population of 2.1 million people within an area of . Houston is the seat of Harris County and the economic center of , which is the ... . It also intersects I-45. |
1959 | |
 Interstate 635 (Texas) Interstate 635 or the Lyndon B. Johnson Freeway is a partial loop around Dallas, Texas between Interstate 20 in Balch Springs, Texas and State Highway 121 at the north entrance of the Dallas-Fort Worth International Airport in Grapevine, Texas. The route is long... |
Dallas Dallas County, Texas As of the census of 2000, there were 2,218,899 people, 807,621 households, and 533,837 families residing in the county. The population density was 2,523 people per square mile . There were 854,119 housing units at an average density of 971/sq mi... and Tarrant Tarrant County, Texas Tarrant County is a county located in the U.S. state of Texas. As of the 2010 U.S. Census, it had a population of 1,809,034. Its county seat is Fort Worth. Tarrant County is the sixteenth most populous county in the United States and the third most populous in Texas. The county is named in honor... counties |
37 miles (59.5 km) | I-635, also known as the Lyndon B. Johnson Lyndon B. Johnson Lyndon Baines Johnson , often referred to as LBJ, was the 36th President of the United States after his service as the 37th Vice President of the United States... Freeway, is a loop Loop route A loop route is a highway or other major road that extends out from a typically longer, more important parents road to enter and circle a large city. A loop can function as a bypass for through traffic and also to service outlying suburbs.... of I-35E. It forms a partial loop around 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... , and also intersects I-20, I-30, and I-45. |
1959 | |
 |
Tarrant County Tarrant County, Texas Tarrant County is a county located in the U.S. state of Texas. As of the 2010 U.S. Census, it had a population of 1,809,034. Its county seat is Fort Worth. Tarrant County is the sixteenth most populous county in the United States and the third most populous in Texas. The county is named in honor... |
35.2 miles (56.6 km) | I-820, also known as the Jim Wright Jim Wright James Claude Wright, Jr. , usually known as Jim Wright, is a former Democratic U.S. Congressman from Texas who served 34 years in the U.S. House of Representatives and was the Speaker of the House from 1987 to 1989.-Early life:... Freeway, is a loop Loop route A loop route is a highway or other major road that extends out from a typically longer, more important parents road to enter and circle a large city. A loop can function as a bypass for through traffic and also to service outlying suburbs.... of I-20. It forms the western, northern and eastern arcs of a complete loop around Fort Worth Fort Worth, Texas Fort Worth is the 16th-largest city in the United States of America and the fifth-largest city in the state of Texas. Located in North Central Texas, just southeast of the Texas Panhandle, the city is a cultural gateway into the American West and covers nearly in Tarrant, Parker, Denton, and... ; I-20 forms the southern arc. I-820 also intersects I-30 and I-35W. |
1959 |