(a) Upon receipt of a notice to abandon a railroad right-of-way by the owner thereof, the commissioner may enter into an agreement with the owners of the railroad right-of-way to preserve intact the railroad right-of-way for a period of time not to exceed three months to afford the state sufficient time to evaluate the potential for use by the state for the purposes of this article, and the funds available for acquisition.
(b) With regard to any land or an interest therein actually acquired by the state pursuant to the provisions of this article:
(1) Every specifically identified railroad right-of-way, including all bridges still in place, shall remain intact except for necessary modifications required to adapt the right-of-way for use as a nonmotorized recreational trail, except for where it is necessary for a motorized vehicle to cross the trail;