An authority or nonprofit entity contracting with the department under this article shall maintain appropriate liability insurance in an amount sufficient to insure against loss resulting from bodily injury, death or property damage, subject to the limitations on recovery of damages contained in this article and any other immunities from civil liability or defenses established under the Constitution of Alabama or any other section of the code or common law, to which the entities might be entitled. The insurance may be obtained through any source available to an approving county commission.