605 ILCS 5/10-102
Before acquiring any bridge or part of a bridge and its approaches as provided in this Division of this Article, the Department shall ascertain, except as otherwise provided in Section 10-102.1, that the bridge and its approaches are structurally sound and in a good state of repair, that all bonds or other obligations issued to finance the cost of constructing or acquiring the bridge and its approaches have been fully retired and that all interest charges in connection therewith have been fully paid and that there are no mortgages, liens or encumbrances of any nature outstanding against the bridge and its approaches or the real property acquired in connection therewith, and, in case the bridge is across a navigable stream, that authority to construct, maintain and operate the bridge and approaches was granted by Act of Congress and that the Act, or a subsequent Act or Acts of Congress in connection therewith, granted full authority to sell, assign or transfer all rights, powers and privileges conferred by the Act of Congress. The conveyance shall be by warranty deed and run to the State of Illinois. The conveyance shall include any interest in real property acquired in connection with the bridge, and shall assign and transfer to the State all rights, powers and privileges conferred by any Act or Acts of Congress in connection with the bridge and approaches.
605 ILCS 5/10-102