(a) It shall be the duty of each board of county commissioners to maintain the section of each county line road assigned to it by the aforesaid agreement. The expenditures on such roads shall be governed by the laws relating to expenditures by boards of county commissioners as expenditures on roads within the boundaries of such counties.
(b) Provided, that when the board of county commissioners of any county is notified by the Board of an adjoining county that an agreement relating to division of county line roads as provided in the preceding section is desired, the boards shall within thirty (30) days of such notice proceed with the division in the manner agreed upon between the respective boards.
Laws 1968, c. 415, § 622, operative July 1, 1968.