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2023 Docket Enabling Ordinance December 19, 2023 <br />Page 92 <br /> <br /> <br />Shoulder Width 1’ 1’ 2’ 1’ <br />Minimum <br />Centerline <br />Radius (ft) <br />60 60 60 60 <br />Surfacing <br />Requirements <br />Gravel BST/ACP BST/ACP Gravel <br />Minimum <br />Crushed <br />Surfacing <br />4” 4” 4” 4” <br />Maximum <br />Grade (%) <br />10 10 10 10 <br />Cul-de-Sac <br />Required <br />Req’d Req’d Req’d Req’d <br />Approach <br />Permit <br />Req’d Req’d Req’d Req’d <br />Stopping Sight <br />Distance <br />WSDOT & <br />AASHTO <br />WSDOT & <br />AASHTO <br />WSDOT & <br />AASHTO <br />WSDOT & <br />AASHTO <br />Ditch Slope <br />(inside slope) <br />2:1 2:1 2:1 2:1 <br /> <br />12.04.04.060 Geotechnical Investigation. <br />If required, geotechnical conditions shall be investigated and tested in accordance with the <br />latest edition, as amended versions of the WSDOT Geotechnical Design Manual or AASHTO <br />Design Manual. The County Engineer may require additional geotechnical investigation based <br />upon specific site conditions. All geotechnical work shall be completed by a geotechnical <br />engineer licensed in the State of Washington. <br /> <br />12.04.04.070 Intersections. <br />Intersection location, spacing, and design are fundamental to the management of access and <br />preservation of capacity provided for in the roadway design. The functional classification of each <br />roadway addresses the appropriate level of access control for that roadway. <br />For proposed access approaches onto any road, the intersections created are classed into two <br />types, roadways and driveways. Roadway intersection design criteria, as defined in this section, <br />will be used for all proposed access approaches that meet the criteria for classification as a <br />roadway under Roadway Classifications, KCC 12.03. Driveway design criteria will be used for