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2023 Docket Enabling Ordinance December 19, 2023 <br />Page 95 <br /> <br /> <br />L. The design of access points must take into consideration the percentage of truck traffic <br />utilizing the access point. Drainage patterns must also be taken into account in the <br />design of access points. Larger access point radii (typically between forty and fifty feet <br />but possibly as much as seventy feet) may be required for access points when multi-unit <br />vehicles or single-unit vehicles exceeding thirty feet in length (SU vehicle equals thirty <br />feet) comprise ten percent or greater of the traffic expected to use the access point. <br />Vehicles should be able to utilize radius return access points without encroaching on <br />adjacent lanes of traffic. <br />M. Additional right-of-way in the form of a maintenance easement may be required to <br />ensure the necessary sight distance (obstruction free zone) can be preserved. <br />12.04.04.080 Roundabouts <br />Roundabouts may be considered for use as a preferable intersection configuration in Kittitas <br />County. All roundabouts shall be subject to approval by the County Engineer. Roundabouts <br />shall be designed and constructed in accordance with the WSDOT Design Manual, applicable <br />FHWA guidance, and these standards. <br /> <br />12.04.04.090 Dead Ends and Turnarounds. <br />When a dead end road or driveway extends more than 150 feet from the centerline intersection <br />of another county or private road, a turnaround shall be provided. The requirements for the <br />turnaround shall meet the following requirements and the details provided in KC Standard Plan <br />9-10. <br /> <br />A. The turnaround shall be a cul-de-sac type for roads serving five or more lots/units. Other <br />turnaround configurations may be used for roads serving less than five lots/units. <br /> B. All turnarounds must conform to the specifications of the International Fire Code. <br /> C. A cul-de-sac shall have a right-of-way or easement diameter of at least 110 feet and a <br />driving surface of at least 96 feet in diameter. <br /> D. At the discretion of the county engineer, turnarounds shall include additional snow storage <br />area in locations that are prone to heavy snowfall. <br /> E. The following shall apply to temporary dead end roads. <br />