All funds arising from the sale of bonds for the construction or repair of viaducts, or for the purchase or condemnation of land for that purpose, shall be paid into the township treasury, and shall be paid out and expended upon the vouchers of the board of township trustees, or of the officers in the township having charge of the repair of public roads or streets.
Contracts for the improvements shall be made in the same manner as other contracts. Vouchers to pay for the contracts, or for any portion of the cost of the improvements, shall be drawn by the board or officers upon the township fiscal officer, who shall keep an accurate account of moneys so expended. The funds created by the sale of bonds for viaduct purposes shall be known as the viaduct fund.