Tex. Gov't Code § 2206.002
(c) The portion of a street or road constructed under this section that is within the area covered by the easement:
(2) may not:
(e) Notwithstanding the provisions of this section, a property owner and the owner of the easement may agree to terms other than those stated in Subsection (c).
Acts 2011, 82nd Leg., R.S., Ch. 81 (S.B. 18), Sec. 2, eff. September 1, 2011.