(a) It is the purpose and intent of this subchapter that:
(1) No bonds shall be issued by the board of commissioners;
(2) No money shall be borrowed and no interest shall be paid, but the entire cost of the improvement shall be paid by the cash payments from the landowners as provided for in this subchapter;
(3) Seventy-five percent (75%) of the total amount of payments due to be made by the various landowners shall be paid to the board of commissioners before the improvements provided for in this subchapter shall be begun.
(b) It is not the purpose of this subchapter to impair the power and authority given the county court by the Constitution and laws of this state over roads and highways of the county.