Texas Transportation Code - TRANSP § 258.006. Tax Abatement;  Reversion of Interest

(a) A private right, title, or interest, other than a mineral interest, held by a person in land underlying a road in which the county has successfully asserted the existence of a public interest under this chapter is exempt from ad valorem taxation by any taxing authority.

(b) A right, title, or interest described in Subsection (a) reverts completely to the person who held the right, title, or interest at the time the county successfully asserted the existence of the public interest in the land if the county ceases to maintain the road, and the person is liable for all ad valorem taxes levied on that right, title, or interest on or after the reversion.

(c) To levy and collect an ad valorem tax on a right, title, or interest described in Subsection (a) that has reverted to the landowner under Subsection (b), the taxing authority must obtain from the county an order stating that the county has ceased to maintain the road.  The owner of the right, title, or interest will be liable for any ad valorem tax levied on the right, title, or interest on or after the date of the county's order.