Okla. Stat. tit. 69, § 69-1313: Funds for acquisition

(a) All monies required to be paid by the governing body of the

board of county commissioners by reason of condemnation proceedings,

and to the extent that the same are to be eventually paid by

assessments levied in accordance with this article, shall be

furnished by the contractor as from time to time needed in the

progress of the condemnation proceedings.

(b) Upon the furnishing of any such sums there shall be

delivered to the contractor by the governing body or the board of

county commissioners an interim certificate, in the amount of the

sum so furnished, naming the contractor as payee, dated of even

date, and bearing six percent (6%) interest per annum. The

certificate shall provide that it is issued in accordance with the

provisions of this article, and payable only in the manner herein

provided. The certificate shall be signed by the mayor or chairman

of the governing body or board, as appropriate, and attested by the

city or county clerk. It shall be in all respects negotiable, and

shall be conclusive evidence of the fact that the sums were so

furnished by the payee for the purpose aforesaid.

(c) If through default or failure of the city or county to

complete the acquisition of the necessary property or shall fail to

complete the limited access facility, the owner or holder of the

certificate shall then, and in that event only, be entitled to

personal judgment against the city or county so issuing the

certificate, which judgment may be collected as provided by law.