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Table 12.04.04-1 <br /> Private Road Minimum Design Standards <br /> Design <br /> Private Rural Road Private Road <br /> Elements Average Lot Size c= 10.0 acres Avg.Lot Size <br /> >10 acres <br /> Number of 3-14 15-30 31+ 2+ <br /> Parcels or Units <br /> Minimum s0 50 50 50 <br /> Easement <br /> Width <br /> Paved Apron Req'd Req'd Req'd Req'd <br /> Roadway Width 20' 22' 22' 20' <br /> Shoulder Width 1' 1' 2 1' <br /> Minimum 60 60 60 60 <br /> Centerline <br /> Radius(ft) <br /> Surfacing Gravel BST/ACP BST/ACP Gravel <br /> Requirements <br /> 1 Minimum 46" 46" 46" 46" <br /> Crushed <br /> Surfacing <br /> Maximum 10 10 10 10 <br /> Grade(A) <br /> _ Req'd Req'd Req'd Req'd <br /> &w1urnaro <br /> Required <br /> Approach Req'd Req'd Req'd Req'd <br /> Permit <br /> Stopping Sight WSDOT& WSDOT& WSDOT& WSDOT& <br /> Distance AASHTO AASHTO AASHTO AASHTO <br /> Ditch Slope 2.1 2.1 2:1 2:1 <br /> (inside slope) _ <br />