The exercise of the powers granted by sections 15-31a to 15-31i, inclusive, shall be in all respects for the benefit of the people of the state, for the increase of their commerce, welfare and prosperity, and as the improvement of their infrastructure, navigability and transportation systems by the authority or its agent shall constitute the performance of an essential public function, neither the authority nor its agent shall be required to pay any taxes or assessments, including mortgage recording taxes, upon or with respect to any property acquired or used by the authority or its agent under the provisions of sections 15-31a to 15-31i, inclusive, or upon the income therefrom. Property and facilities owned by the authority shall be deemed to be state-owned real property for purposes of section 12-18b, and the state shall make grants in lieu of taxes with respect to such property and facilities to the municipality in which such property and facilities are located as provided by section 12-18b.