(a) This section applies only to a district:
(1) whose authority to exercise the power of eminent domain under § 172.157 expired under § 2206.101(c), Government Code; and
(2) that is located in a county adjacent to a county in which there is located a port authority that has the authority to issue a permit for the movement of oversize or overweight vehicles under Subchapter O or P, Chapter 623.
(b) Notwithstanding the expiration of the district’s authority as described by Subsection (a), the district, on and after September 1, 2015, may exercise the power of eminent domain in accordance with § 172.157.