Okla. Stat. tit. 19, § 19-1236

If the record title holders of more than sixty percent (60%) of

the area of the land liable to assessments for any improvement

petition the county commissioners of such county for the improvement

of any road, street, alley, lane, or avenue, or part thereof, not

less than six hundred (600) feet in length, the petition shall

describe the character of the improvement desired, the width of the

same, and the materials preferred by the petitioners for such

improvement. The petition shall show the petitioners are the record

title holders of the land liable for assessment and shall include a

plat of the area to be assessed which shows the area of each parcel

of land to be assessed on a pro rata basis of the entire area to be

assessed, the preliminary plans, typical sections, and estimates.

The notice providing for determining the necessity of such

improvements shall not be published as provided in Section 1234 of

this title.

The finding of the board of county commissioners as to the

sufficiency of any such petition shall be conclusive and binding for

all purposes, including prohibiting protest or objection to such

improvement, and against all persons. The board shall have the

power to have hearings on said petition and compel the attendance of

witnesses under oath to determine the sufficiency of said petition,

and no action or suit to question the findings of the board on the

sufficiency of said petition shall be commenced later than fifteen

(15) days after such finding. Upon finding the petition sufficient,

the board shall cause such improvements to be made in accordance

with the prayer of said petition as nearly as may be practicable.