35 ILCS 200/11-80.1
Due to the importance of developing high-speed or faster rail service, the General Assembly finds that it should encourage freight railroad owners to participate in State and federal government programs, including cooperative agreements designed to increase the speed of passenger rail service, that participation in those programs should not result in increased property taxes, and that such an increase in property taxes could negatively impact the participation in those programs. Therefore, the Department shall take into consideration any potential increase in a property's overall valuation that is directly attributable to the investment, improvement, replacement, or expansion of railroad operating property on or after January 1, 2010, through State or federal government programs, including cooperative agreements, necessary for higher speed passenger rail transportation. Any such increase in the property's overall valuation that is directly attributable to the investment, improvement, replacement, or expansion of railroad operating property on or after January 1, 2010, through State or federal government programs necessary for higher speed passenger rail transportation, including cooperative agreements, shall be excluded from the valuation of its real property improvements under Section 11-80. This Section applies on and after the effective date of this amendatory Act of the 97th General Assembly and through December 31, 2029 .
35 ILCS 200/11-80.1