Section 12-105.1 - Condemnation action to acquire private property(a) Notwithstanding any other provision of law, the State or any of its instrumentalities or political subdivisions shall file an action to acquire private property for public use by condemnation within 4 years of the date of the specific administrative or legislative authorization to acquire the property.(b) If an action for condemnation is not filed within 4 years of the date described in subsection (a) of this section, the State or any of its instrumentalities or political subdivisions may not proceed with condemnation until it first obtains a new authorization to acquire the property.