Close bridges with less than an HS-3 Operating Rating capacity pursuant to the Texas Load Posting Guidelines presented in Figure 6-4 and Figure 6-5. Follow these policies for onsystem bridges. It is strongly recommended that they also be followed by municipalities and counties with jurisdiction over off-system bridges. Bridges with Inventory Ratings less than HS-3 but with Operating Ratings greater than HS-3 may remain open for 24 months. If it is desired to leave a bridge in this category open, then inspect it every six months and ensure the bridge is programmed for rehabilitation or replacement within two years. Close the bridge if after 24 months it has not been rehabilitated or replaced.