Okla. Stat. tit. 19, § 19-1258: Proceeds from sale of bonds – Disbursement – Payment of

contractor.

The proceeds from the sale of the bonds pursuant to the

provisions of Section 1257 of this title shall be deposited in

separate accounts established for each improvement and disbursed

only for the cost associated with the respective improvement.

Payment to the contractor shall be in parcels on the completion of

the work or improvement or any part thereof, not less than one

block, to an amount equal to the improvement so completed and

accepted. Any funds not disbursed shall be utilized by the county

commissioners to recall outstanding bonds. Payment to the

contractor in money shall be paid no more than sixty (60) days after

the due date for payment of assessments, including special

assessments and each installment of such assessments and the

interest on such assessments.