S.C. Code Ann. § 54-3-180

The Authority may exchange any property acquired under the authority of this chapter for other property usable in carrying out the powers hereby conferred and also may remove from lands needed for its purposes and reconstruction on other locations, buildings, terminals, railroads or other structures upon the payment of just compensation, if, in its judgment, it is necessary or expedient so to do in order to carry out any of its plans for port development, under the authorization of this chapter.