Miss. Code Ann. § 65-11-41

It being recognized that county roads and bridges of the various counties of the state have deteriorated to a considerable extent during the past several years, and it being further recognized that the selection, construction, and improvement of a system of all-weather county roads and bridges is a matter of primary state-wide concern, it is hereby declared to be the purpose of Sections 65-11-39 through 65-11-59 to provide for a county rural road and bridge construction program in addition and supplemental to that provided by cooperation with the Federal Highway Act of 1944, in addition to that provided by Sections 65-11-1 through 65-11-37.