Section 24-1-108 - Closing or restricting use; public notice(a) To notify the public that a state highway is closed or its use restricted pursuant to this act notification shall be in one (1) or more of the following forms: (i) Erect suitable barriers or obstructions upon such highway; (ii) Post warnings and notices of the condition of any such highway; (iii) Post signs for the direction of traffic upon it, or to or upon any other highway or detour open to public travel; (iv) Place warning devices on such highway; (v) Assign a flagman to warn, detour or direct traffic on such highway.