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TxDOT Trivia and General Facts
  • Department established - The Texas Department of Transportation (TxDOT) was established in 1917 as the Texas Highway Department to administer federal highway funds.
  • Adopt-a-Highway - There are more than 4,000 volunteer groups participating in this program that was established in 1985. More than 8,000 miles of highway have been adopted.
  • First highway - A 20-mile section between Falfurrias and Encino in Brooks County was the first road built by the highway department. Work on the road, along the same corridor as present day US 281, began in 1918 and was completed in 1920.
  • Shortest highway - Loop 168 in downtown Tenaha in Shelby County. The road is 0.074 miles long, or about 391 feet.
  • Longest highway - US 83. It extends from the Oklahoma state line in the Panhandle near Perryton, to the Mexico border at Brownsville. It is 899 miles long.
  • Highest highway - At the end of a spur from Texas 118 to the McDonald Observatory on Mount Locke in the Davis Mountains of West Texas. It is 6,791 feet above sea level.
  • Centerline miles - There are more than 79,000 centerline miles on the state-maintained system.
  • Highest bridge - The Rainbow Bridge (Texas 87) near Port Arthur has 177 feet of clearance between the water and the roadway above the water.
  • Named roads - The Old San Antonio Road (OSR) between Midway and Bryan-College Station is the only state maintained highway without a number.
  • Wildflowers - TxDOT sows more than 30,000 pounds of wildflower seeds every year as part of its vegetation management program.
  • Motor vehicles - There are more than 18.7 million motor vehicles registered in Texas.
  • Pocket Facts - provide general summaries about the department.

 

 

 

 

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