70 ILCS 1815/6.5

To petition any Federal, State, municipal or local authority, administrative, judicial and legislative, having jurisdiction in the premises, for the adoption and execution of any physical improvement, change in method, system of handling air traffic, freight, warehousing, docking, lightering, and transfer of freight, which in the opinion of the Board are designed to improve or better the handling of commerce in and through the Port District or improve terminal or transportation facilities therein.