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Over the years, the system has expanded significantly, reflecting the growth and changing needs of Texas. As of 2021 [update] , the total length of the 246 currently in-service highways with unique assigned numbers is 14,092.7 miles (22,680.0 km).
The Interstate Highway with the longest segment in Texas is I-10 at 880.6 miles (1,417.2 km). The shortest 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.
Also included is additional data on the length of each country or region's controlled-access highway network (also known as a motorway, expressway, freeway, etc.), designed for high vehicular traffic. Unless otherwise noted, the data is from the United States's Central Intelligence Agency. [1] * indicates Roads in Country/Territory links.
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 3,239.7 miles (5,213.8 km) and consists of twelve primary routes, seven auxiliary routes and Interstate 35 (I-35) which is split into two ...
At just under 880 mi (1,420 km), the Texas segment of I-10, maintained by the Texas Department of Transportation, is the longest continuous untolled freeway in North America that is operated by a single authority. [3] It is also the longest stretch of Interstate Highway with a single designation within a single state.
Since the policy on numbering and designating US Highways was updated in 1991, AASHTO has been in the process of eliminating all intrastate U.S. Highways under 300 miles (480 km) in length, "as rapidly as the State Highway Department and the Standing Committee on Highways of the American Association of State Highway and Transportation Officials ...
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State Highway 99 (SH 99), also known as the Grand Parkway, is a beltway in the U.S. state of Texas.Its first section opened on August 31, 1994. When the route is completed, it will be the longest beltway in the U.S., the world's seventh-longest ring road, and the third (outer) loop of the Houston–The Woodlands–Sugar Land metropolitan area, with Interstate 610 being the first (inner) loop ...