(605 ILCS 5/6-409) (from Ch. 121, par. 6-409)
    Sec. 6-409. No contract so made shall be considered as let unless the contractor shall, within 15 days after the final award of the same, enter into contract and file a bond with good and sufficient sureties with the highway commissioner, in the penal sum at least equal to the amount of the contract, payable to the commissioner of the district, upon failure to comply with the conditions of such contract.
(Source: Laws 1959, p. 196.)