There is hereby created a commission to be known as the Cahaba Trace Commission to consist of 23 members who shall be appointed by the Governor of Alabama and shall be bona fide residents and qualified voters of the county represented. Said members shall be confirmed by the Senate. Two shall be residents of St. Clair County, two shall be residents of Jefferson County, two shall be residents of Shelby County, two shall be residents of Autauga County, two shall be residents of Tuscaloosa County, three shall be residents of Bibb County, two shall be residents of Perry County, two shall be residents of Hale County, two shall be residents of Dallas County, two shall be residents of Lowndes County and two shall be residents of Montgomery County. Said members appointed by the Governor shall constitute the board of directors of the commission and shall be the voting members of the commission. The board, at its discretion, may appoint as many advisory members as it deems necessary.