(70 ILCS 1825/2.4) (from Ch. 19, par. 252.4)
    Sec. 2.4. "Port facilities" means all public structures, except terminal facilities as defined herein, that are in, over, under, or adjacent to navigable waters and are necessary for or incident to the furtherance of water commerce and includes the widening and deepening of slips, harbors, and navigable waters.
(Source: Laws 1965, p. 3150.)