55 ILCS 5/5-32049
The county, upon the written request of the holders of all of the outstanding and unpaid vouchers issued in payment of the work, shall issue and deliver to such voucher holders, in exchange for such vouchers, bonds provided for in this Section if prior to the receipt of such request the county has not issued or has not made any commitment to issue any bonds the funds from which are to be used toward paying such outstanding and unpaid vouchers in full. The bonds shall be dated as of and shall draw interest from the date of their issuance except when issued in exchange for vouchers theretofore issued in payment of the work. In such latter case the bonds shall be issued in the principal amount of the unpaid balance of the vouchers and shall bear the same date as the vouchers for which they are exchanged or the date to which interest was last paid on the vouchers, and the bonds shall draw interest from such date. The bonds shall be issued at not less than their par value. The bonds shall be executed by such county officers as may be prescribed by law. The bonds shall bear interest at a rate of not more than the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, nor less than 4% annually. The bonds shall recite specifically that they are payable solely and only from the assessment levied for the payment of the cost of the improvement, designating the improvement for which the assessment has been levied, and shall mature on or before December 31, next succeeding the January 2, on which the last installment shall mature. Interest coupons attached to the bond shall bear the official or facsimile signatures of the same officers who signed the bonds and shall be made payable at the office of the county treasurer. The bonds shall be numbered consecutively beginning with number one upwards and shall be payable in their numerical order and redeemable prior to maturity in numerical order as hereinafter provided. Each of the bonds issued pursuant to this Section shall bear a legend on the face of the bond printed in bold face type and in a paragraph by itself to the effect that the bond is one of a series of bonds which are to be paid and redeemed in numerical order and not on a pro rata basis.
With respect to instruments for the payment of money issued under this Section or its predecessor either before, on, or after the effective date of Public Act 86-4, 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 Division or "An Act authorizing certain counties to undertake local improvements and defining the powers and duties of such counties with respect thereto", approved August 18, 1972, that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section or its predecessor are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section or its predecessor within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Division or "An Act authorizing certain counties to undertake local improvements and defining the powers and duties of such counties with respect thereto", approved August 18, 1972, that may appear to be or to have been more restrictive than those Acts.
55 ILCS 5/5-32049