Tex. Nat. Res. Code § 111.0191
In the event a common carrier pipeline in the exercise of the power of eminent domain or police power or any other power granted under this chapter makes necessary the relocation, raising, lowering, rerouting, or changing the grade of, or altering the construction of any railroad, electric transmission, telegraph or telephone lines, properties and facilities, or pipeline, all such relocation, raising, lowering, rerouting, changing of grade, or alteration of construction shall be accomplished at the sole expense of such common carrier pipeline. The term "sole expense" means the actual cost of the relocation, raising, lowering, rerouting, or change in grade or alteration of construction in providing comparable replacement without enhancement of the facilities, after deducting therefrom the net salvage value derived from the old facility.
Tex. Nat. Res. Code § 111.0191