The members and the Chair of the Board of the Franklin County Commission have had added to their responsibilities the duty and obligation to maintain and oversee the road system for Franklin County. This has necessitated the members and chair to expend their funds in visiting, overseeing, and supervising road work and construction. In order to help offset this expense, the members and Chair of the Board of the Franklin County Commission shall be entitled to receive an expense allowance in the amount of one hundred fifty dollars ($150) per month to be paid from the seven cent ($.07) gasoline tax fund. The expense allowance shall be in addition to any and all other compensation, salary, or expense allowance provided by law.