Okla. Stat. tit. 69, § 316
The Commission, on or before the first day of June of each year, shall certify to the Oklahoma Tax Commission the county road mileage of each county and the total county road mileage of the state as such mileage existed on the first day of January of such year. Such mileage shall be the computation of the existing road mileage for counties including any mileage represented by streets or roads that the boards of county commissioners are required to construct, improve, repair or maintain pursuant to the provisions of Section 36-113 11-36-113 of Title 11 of the Oklahoma Statutes. Any roads removed from the State Highway System by the Transportation Commission and returned to the county road system shall be added to the total county road mileage of the said county.
Laws 1963, HB 711, c. 351, 1; Amended by Laws 1967, HB 681, c. 366, 1, emerg. eff. May 22, 1967; Amended by Laws 1968, HB 501, c. 415, § 316, emerg. eff. July 1, 1968; Amended by Laws 1981, SB 149, c. 309, §1; Amended by Laws 1983, SB 485, c. 317, § 8, emerg. eff. June 27, 1983; Amended by Laws 1987, HB 1473, c. 236, § 118, emerg. eff. July 20, 1987.