Miss. Code Ann. § 65-21-25: Miss. Code Ann. § 65-21-25

A bridge built at the intersection of a river flowing from one county into another shall be built at the nearest available site to said intersection. A municipality which, in the judgment of its governing authorities, will be benefited by the construction of such bridge may join such county, or either of them, in building such bridge and keeping and maintaining same upon such terms as may be mutually agreed upon.