Indiana Code Title 8. Utilities and Transportation § 8-16-2-4

Sec. 4.  If the department shall, in its discretion, determine to construct any such bridge as in this chapter provided for, in accordance with the authority conferred by this chapter, the department shall ascertain and estimate, as nearly as is practicable, the probable cost of the location and construction of such bridge, including the approaches thereto as a part thereof, and including also in said estimated cost the cost of acquiring all necessary personal and real property and easements in real property, and shall certify the amount of such estimated cost, together with a copy of its order expressing its determination to construct such bridge, to the county auditor of that county in Indiana in which such bridge, or any part thereof, considering the approaches thereto as a part thereof, is located;  and thereupon such county, by and through its board of county commissioners, by appropriate resolution and order, shall forthwith issue and execute the negotiable bonds of such county, with proper interest coupons attached thereto, in an amount equal to one-fourth of such estimated cost of the location and construction of such bridge:  Provided, That no county shall issue its bonds under the provisions of, or for any of the purposes contemplated in, this chapter in any amount in excess of one percent (1%) of the adjusted value of the taxable property within such county as determined under IC 36-1-15.