605 ILCS 5/10-204
If a majority of the legal voters voting at such election on such question, voted in favor of the proposition, the county clerk shall issue (from time to time as the work progresses) a sufficient amount, in the aggregate, of the bonds of such county for the purpose of assisting in the construction or repair of any such bridge or bridges, as set forth in this Division of this Article, and in accordance with the prayer of the petition. Such bonds shall be of such denominations, upon such time, bear such rate of interest (not exceeding the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract), and be disposed of, as the necessities and convenience of such county may require. However, such bonds shall not be sold nor disposed of, either by sale or by payment to contractors for labor or materials, for less than par value. Such bonds shall be issued in not less than 5 nor more than 30 annual series, the first series of which shall mature not more than 5 years from the date of issue, and each succeeding series in succeeding years thereafter. A register of all issues of such bonds shall be kept in the office of the county clerk of such county, showing the date, amount, rate of interest, maturity, and the purpose for which such bonds were issued, and it shall be the duty of such county clerk, to extend annually against all the property in such county, a tax sufficient to pay the interest of such bonds in each year prior to the maturity of such first series, and thereafter he shall extend a tax in each year sufficient to pay each series as it matures, together with interest thereon and with the interest upon the unmatured bonds outstanding. Such bonds may be lithographed and the interest for each year evidenced by interest coupons thereto attached, which coupons shall be signed with the original or facsimile signatures by the same officers who executed the bonds.
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 5/10-204