The port authority may exchange any property or properties acquired under the authority of this chapter for other property or properties usable in carrying out the powers hereby conferred, and also remove from lands needed for its purposes and reconstruct on other locations buildings, terminals, railroads, or other structures upon the payment of just compensation, if, in its judgment, it is necessary or expedient to do so in order to carry out any of its plans for port development.
Ala. Code § 33-1-20 (1975)