Indiana Code Title 8. Utilities and Transportation § 8-6-2.1-29

Sec. 29. (a) In order to raise money to pay the city's portion of the total cost of an improvement and in anticipation of the special benefit tax to be levied, the board shall issue, in the name of the city, at one (1) time, or from time to time as the proceeds are needed, the bonds of the grade separation or railroad relocation and reconstruction district not to exceed in aggregate amount the balance of the city's portion of the total cost after deducting from the city's portion the total amount of benefits, if any, which have been assessed by the board and finally confirmed or adjudged against lots and parcels of land exclusive of improvements lying within two thousand (2,000) feet of any grade crossing eliminated or altered by the improvement, or within two thousand (2,000) feet of any lands or rights-of-way abandoned in whole or in part for railroad use or from which railroad facilities are to be removed.

(b) The bonds may be issued in any denomination not exceeding one thousand dollars ($1,000) each in not less than forty (40) nor more than sixty (60) equal series, as the board determines, and shall be payable one (1) series each six (6) months beginning on the first day of July of the first year following the date of their issue.  If the bond issue is ordered in any calendar year after the date of the annual tax levy, then the first series shall mature on the first day of July of the second year and the balance of the bonds at the designated regular intervals.  The bonds shall be negotiable as inland bills of exchange and shall bear interest payable on the first days of January and July of each year, the first interest to be payable on the first maturity date of the bonds.

(c) Upon adoption of a resolution ordering bonds, the board shall certify a copy of the resolution to the controller or clerk-treasurer of the city in which the grade separation district is located;  that officer shall prepare the bonds, and the mayor of the city shall execute the bonds and the city controller or clerk-treasurer shall attest the execution.  The bonds shall be exempt from taxation for all purposes.  All bonds issued by the board shall be sold by the city controller or clerk-treasurer to the highest bidder, but not at less than par and accrued interest to date of delivery, after giving notice of sale of the bonds by publication in accordance with IC 5-3-1.  The publication shall be made not less than fifteen (15) days prior to the date fixed for the sale of the bonds.

(d) The bonds are not a corporate obligation or indebtedness of the city, but constitute an indebtedness of the district as a special taxing district, and the bonds and interest shall be payable only out of a special tax levied upon all property of the special taxing district, as in this chapter provided, and the bonds shall recite the terms upon their face, together with the purposes for which they are issued.

(e) No suit to question the validity of the bonds issued for the special taxing district, or to prevent their issue, may be maintained after the date set for the sale of the bonds, and all bonds after that date are incontestable for any cause.