Tex. Loc. Gov't Code § 263.005

If, at the time real property, or an interest in real property, is sold, leased, or exchanged under this subchapter, a public utility or common carrier that has the right of eminent domain is using the property for right-of-way and easement purposes, the sale, lease, exchange, conveyance, and surrender of possession of the property or interest are subject to the right of and continued use by the public utility or common carrier.