605 ILCS 5/10-706
Any municipality may by ordinance authorize the issue of refunding revenue bonds, payable solely from the revenues of a bridge to refund the principal or accrued interest, or both, of its outstanding revenue bonds issued hereunder, prior to their maturity, and the principal and accrued interest of its matured outstanding revenue bonds issued under the provisions of this Division of this Article, and which by their terms are payable solely from the net revenues of the bridge. The refunding revenue bonds may be made registerable as to principal and bear interest at a rate not to exceed the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, payable at such time or at such place as may be provided for in the ordinance authorizing the issue thereof.
With respect to instruments for the payment of money issued under this Section either before, on, or after the effective date of this amendatory Act of 1989, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Act that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Act that may appear to be or to have been more restrictive than those Acts.
605 ILCS 5/10-706