List of Interstate Highways in Texas
Template:Short description Template:Use mdy dates <templatestyles src="Infobox road/styles.css" />Script error: No such module "Infobox".Template:Template other The Interstate Highways in Texas are all owned and maintained by the U.S. state of Texas.[1] The Texas Department of Transportation (TxDOT) is the agency responsible for the day-to-day maintenance and operations of the Interstate Highways in Texas. The Interstate Highway System in Texas covers Template:Convert and consists of twelve primary routes, seven auxiliary routes and Interstate 35 (I-35) which is split into two branches, I-35E and I-35W, that provide access to both Fort Worth and Dallas. The longest segment of Interstate Highway in Texas is I-10 at Template:Convert; the shortest is I-110 at Template:Convert.
The construction of the Interstate Highway System in Texas began well before these routes were designated as Interstate Highways. A Template:Convert stretch of 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, Template:Convert 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.[2] 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.[3] The opening of a Template:Convert section of I-27 in 1992 completed the Interstate Highway System in Texas.[4]
Planning is ongoing for a proposed extension of I-69 southward from its original terminus in Indiana through Texas to the United States–Mexico border.[5] If complete as planned, I-69 will extend about Template:Convert across Texas, from the Louisiana state line in the Texarkana–Shreveport area to South Texas.[6] The first Template:Convert portion was approved in 2011, with signage posted December 6, 2011.
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Primary Interstate Highways
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I-10 and I-35 run concurrently as an elevated freeway in Downtown San Antonio
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I-20 in southern Fort Worth
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I-37 and I-410 interchange on the southeast side of San Antonio
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Interchange between I-37 and I-69E/US 77
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I-10/US 90 and I-45 near Downtown Houston
Auxiliary Interstate Highways
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I-610 at US 290 in Houston
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The High Five Interchange at I-635 and US 75 in Dallas
Business Interstate Highways
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Bus. I-10-D in Van Horn
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Bus. I-35-E in Pearsall