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Table 12.04.04-1 <br />Private Road Minimum Design Standards' <br />Design <br />Elements <br />Private Rural Road <br />Average Lot Size <= 10.0 acres <br />Private Road <br />Avg. Lot Size <br />>1O acres <br />Number of <br />Parcels or Units <br />3-14 1 5-30 31+2+ <br />Minimum <br />Easement <br />width <br />50 50 50 50 <br />Paved Apron Req'd Req'd Req'd Req'd <br />RoadwayWdth 20'22'22'20' <br />Shoulder Width 1 1 2'1 <br />Minimum <br />Centerline <br />Radius (ft) <br />60 50 60 60 <br />Surfacing <br />Requirements <br />Gravel BST/ACP BST/ACP Gravel <br />Minimum <br />Crushed <br />Surfacing <br />+9"+9"re"4&" <br />Maximum <br />Grade (%d <br />10 10 10 10 <br />€C-de-€ae- <br />TUrnaround <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 />WSDOTSt <br />AASHTO <br />WSDOT & <br />AASHTO <br />WSDOT 8r <br />MSHTO <br />WSDOT 8r <br />AASHTO <br />Ditch Slope <br />(inside slope) <br />?:1 2:1 2:1 2:1 <br />n.04.A4.060 Geotechnical lnvestigation. <br />lf required, geotechnical conditions shall be investigated and tested in accordance with the latest edition, <br />as amended versions of the WSDOT Geotechnical Design Manual or MSHTO Design Manual. The County <br />Engineer may require additional geotechnical investigation based upon specific site conditions- All <br />geotechnical work shall be completed by a geotechnical engineer licensed in the State of Washington. <br />Title 12 Kittitas County Code I Draft No. S-Working Draftfor Adoption 70/72/2023 <br />45