2019-02-11-minutes-public-works-study-session

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Private roads shall comply with the design requirements of Table 4-4. Table 4.4 Prtvate Road Minimum Design Standards Design sernen4s Road Type Divew ay Drivaw Joint-IJIlse Private Road(a Private RoadP' Private Roadar PO4ate Road Average tot 5¢e <-- 10.0 acres. Average Lot Size > 10.0 acres. Number of Parcels and/or units 1 2 3-14 15-40 41+ 2+ Minimum Easement Width 0 30f 60'(3) 60' 60' 60' Patted Apron(') NIA NIA Req'd Req'd Req'd Req'd Roadway Width 12' or 1901 12' or 16(s) 20' 27 22' 20' Shouider Width NIA NIA 1' 1' 11 Minimum Centerline Radius (it) NIA NIA 60 60 SO Surfacing Requimments(41 Gravel Gravel Gravel BS17ACP Gravel 6" 6" Minimum Crushed Surfacing (5) WAkNIA s" Maximum Grade % (7l 15 10 10 10 Cul -de -Sac Required N/A Req'd Req'd Reqd County Road Approach Permit Req'd Req'd Req'd Reqd Stopping Site Distance NIA AASHTO AASKrO AASHTO Ditch Slope (inside slope)2:1 2:1 2:1 2:1 (1) Applies to of roads accessing wcisting paved roadway. (2) AI private roads shall be inspected and certified by a cW.engneer licensed in %ha State of Washington for conformance with the current edition of the Wnitas County Road Standards. (3) 6ds&V road easements Trey be a rrinirrum of 40'. New road easements shall be a minimrmof fill'. Eidsting driyew ay easements may a nininmrn of 20'. New driveway easements shag be a nininxrrnof 30'. (4) (rushed surfacing per VWCOT Standard Speclicatwns. (5) Additional depth may be required for roads that are to be pubfic roads. (6) Any new davew ay longer than 150' in length stag have a w idth of no less than 16'. New drivew ays less than 150' in length shall have a w idth of no less than 12'. If K= 20.02.020 is stricter, the stricter standard shag (7) A variance request is required for private road grades betw een 141295. 12.04.090 Primate Road Construction Control Inspection and Certification Prior to final approval of any land use development activity, the entire private road system serving a development shall be certified by a civil engineer licensed in the State of Washington to meet Kittitas County Road Standards, unless a performance guarantee is provided in accordance with KCC 12.01.150. The certification shall include all private roads used to access the development from a County or other publicly maintained road. The certification shall be prepared in accordance with the Department of Public Works private road certification guidelines. All information required by the private road certification guidelines shall be presented for the certification to be complete. A final acceptance inspection by the Department of Public Works is required prior to acceptance of the road certification. Any noted deficiencies must be corrected prior to final acceptance. The following provides road certification guidelines: 27 Kittitas County Code 12: ROW Standards Adopted 121157015 i