Okla. Stat. tit. 19, § 19-1256: Contractor's bond - Deposit prior to acceptance of

improvement - Amount - Repair of improvements.

Upon acceptance by the board of county commissioners of said

improvements, and before the final payment of the contract price,

the board of county commissioners of any county shall require the

contractor performing such work to make and execute a good and

sufficient surety bond or deposit sufficient securities or

obligations of the United States of America or of the State of

Oklahoma or some municipality subdivision thereof to be approved by

said board of county commissioners in the sum to be determined by

the board of county commissioners, in no case to be less than ten

percent (10%) of the contract price, conditioned that the contractor

will immediately reimburse the county for the maintenance of said

improvements against any failure due to defective workmanship or

materials for a period of five (5) years from the time of its

completion and acceptances. Whenever any repairs of said

improvements due to defective workmanship or materials are deemed

necessary by the board of county commissioners they shall order the

same to be made under the supervision of the county engineer or,

where there is no county engineer, contract for the services of a

qualified engineer and the costs thereof certified to by said

engineer; and, when approved by the board of county commissioners,

the contractor and his bondsmen shall be notified of the amount

expended and shall immediately become liable therefor.