70 ILCS 200/170-20
The Authority shall have the power to acquire and accept by purchase, lease, gift or otherwise any property or rights from any person or persons, any municipal corporation, body politic, or agency of the State, or from the State itself, useful for its purposes, and to apply for an accept grants, matching grants, loans or appropriations from the State of Illinois or any agency or instrumentality thereof to be used for any of the purposes of the Authority and to enter into any agreement with the State of Illinois in relation to such grants, matching grants, loans or appropriations. An Authority located in a county with a population over 50,000 and under 70,000 according to the 1980 federal census may acquire real property or interests in real property by condemnation for any of the purposes of the Authority.
70 ILCS 200/170-20