Wis. Stat. § 114.69: Liability limited.

(1) Neither the state nor any political subdivision of the state nor any officer, employee, or agent of the state or of a political subdivision who is acting within the scope of employment or agency is liable for any debt, obligation, act, or omission of the authority.

(2) All of the expenses incurred by the authority in exercising its duties and powers under this chapter shall be payable only from funds of the authority.