Legal Basis for Naming

Texas Transportation Code, contains "General Provisions Relating to Municipal Streets." Sections 311.001-003 grant municipalities control over their streets. This control extends to assigning street names to highways within their jurisdiction.
Counties are not allowed to “street name” numbered highways.
The Texas Department of Transportation (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.