335.07  Sufficiency rating system for roads on State Highway System.--

(1)  The department shall adopt a sufficiency rating system for roads on the State Highway System.

(2)  Such system shall include, but shall not be limited to, the consideration of the following factors:

(a)  Structural adequacy;

(b)  Safety; and

(c)  Service.

(3)  The determination of rating, at a minimum, shall take into consideration the volume of traffic using the roads and the minimum engineering standards required to safely accommodate such volume of traffic; the age of the roads; the width of pavement and shoulders; the number and degree of curves, both horizontal and vertical; ridability; and maintenance economy.