List of Interstate Highways in Texas

List of Interstate Highways in Texas

This is a list of Interstate Highways in Texas, all of which are owned and maintained by the U.S. state of Texas. [cite web|url=https://www.fhwa.dot.gov/interstate/faq.htm#question5|title=Interstate Frequently Asked Questions|author=Federal Highway Administration|accessdate=2008-02-25] 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 convert|3233.4|mi|km|1|link=on 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 convert|878.6|mi|km|1. The shortest Interstate Highway in the state is I-110 at convert|0.9|mi|km|1.

The construction of the Interstate Highway System in Texas actually began well before these routes were designated as Interstate Highways. A convert|50|mi|km|0|sing=on 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, convert|43|mi|km|0 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. [cite web|url=http://www.txdot.gov/about_us/1970_1951.htm|title=TxDOT History: 1970 to 1951|author=Texas Department of Transportation|accessdate=2008-02-25] 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. [cite web|url=http://tti.tamu.edu/interstate_anniversary/white_paper/|title=From Anywhere to Everywhere: The Development of the Interstate Highway System in Texas|author=Beaumont et al.|publisher=Texas Transportation Institute|pages=30|accessdate=2008-02-25] The opening of a convert|6|mi|km|0|sing=on section of I-27 in 1992 completed the Interstate Highway System in Texas. [cite web|url=http://www.txdot.gov/about_us/2000_1971.htm|title=TxDOT History: 2000 to 1971|author=Texas Department of Transportation|accessdate=2008-02-25]

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. [cite web|author=Texas Department of Transportation|url=http://ttc.keeptexasmoving.com/projects/i69/|title=I-69/TTC (Northeast Texas to Mexico)|accessdate=2008-02-24] If built, I-69 will extend about convert|650|mi|km across Texas, from the Louisiana state line in the Texarkana-Shreveport area to South Texas. [cite web|author=Texas Department of Transportation|url=http://ttc.keeptexasmoving.com/publications/files/I69_Meeting_Handout_New_010908.pdf I-69|title=TTC Tier 1 EIS Meeting Handout|date=2008-02-09]

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Primary Interstate Highways


concurrently as an elevated freeway in Downtown San Antonio.

Auxiliary Interstate Highways


US 290 in Houston
High Five Interchange at I-635 and US 75 in Dallas

References


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