The Mayor of the City of Russellville, Franklin County, shall receive an expense allowance of four hundred dollars ($400) per month, and each member of the governing body of the city shall receive an expense allowance of one hundred dollars ($100) per month; such expense allowances shall be paid from the city general fund in the same manner as the salary of such mayor and members of the city governing body are paid, and shall be in addition to any other salary, expense, or allowance provided such mayor and city governing body members.