Tex. Transportation Code § 451.062: POWER TO ENTER REAL PROPERTY.

(a) The engineers, employees, and other representatives of an authority may go on any real property within the boundaries of the authority to:

(1) make surveys and examine the property with reference to the location of works, improvements, plants, facilities, equipment, or appliances of the authority; and

(2) attend to any authority business.

(b) Before a person described by Subsection (a) goes on any property under the authority of that subsection, at least two weeks' notice shall be given to the owners in possession.

(c) Property damaged by any authority activity under this section shall be restored as nearly as possible to the original state at the sole expense of the authority.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.