Texas Transportation Code, Chapter 225, Subchapter A, grants local governments and the Texas Legislature the authority to assign a memorial designation to portions of the state highway system (including a highway, bridge, or other structure) and establishes how this is coordinated with the Texas Department of Transportation (TxDOT). TxDOT is specifically prohibited from naming or otherwise designating a highway, street, or bridge with any name or symbol other than the regular highway number.

Title 43, Section 25.9 of the Texas Administrative Code, provides the rules for implementing Chapter 225 of the Texas Transportation Code.