Indiana Code Title 8. Utilities and Transportation § 8-15-2-19

Sec. 19. (a) The authority may, after adopting a resolution and after receiving the governor's approval, at any time determine under IC 8-23-7 that a toll road project constructed or operated by the authority, other than a toll road project that is subject to a public-private agreement under IC 8-15.5, should become a part of the system of state highways free of tolls or become a tollway under IC 8-15-3.

(b) Any resolution as to any project described in subsection (a) shall not become effective until all bonds to which the revenues of any project were pledged for payment, together with all interest thereon, is paid, or a sufficient amount for the payment of all bonds and the interest thereon to maturity is set aside in trust for the benefit of bondholders.

(c) Until any resolution is adopted by the authority under subsection (a) and becomes effective as provided in subsection (b), and subject to the terms of any public-private agreement under IC 8-15.5, any project constructed by the authority or its predecessors remains under the jurisdiction of the authority and the authority shall continue to maintain and operate the project and levy and collect tolls as provided in this chapter.  Tolls on any project may be continued after the date of the payment of the principal of and interest on bonds issued for the construction of that project.