A project under this article and tangible personal property used exclusively in connection with a project that are:
under the terms of a public-private agreement are considered to be public property devoted to an essential public and governmental function and purpose. The property, and an operator's leasehold estate or interests in the property, are exempt from all ad valorem property taxes and special assessments levied against property by the state or any political subdivision of the state.
IC 8-15.7-7-1