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Roundabouts may be considered for use as a preferable intersection configuration in Kittitas County. All <br />roundabouts shall be subject to approval by the County Engineer. Roundabouts shall be designed and <br />constructed in accordance with the WSDOT Design Manual, applicable FHWA guidance, and these <br />standards. <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 of another <br />county or private road, a turnaround shall be provided. The requirements for the turnaround shall meet <br />the following requirements and the details provided in KC Standard Plan 9-10. <br />A. The turnaround shall be a cul-de-sac type for roads serving five or more lots/units. Other turnaround <br />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 driving surface <br />of at least 90 feet in diameter. The easement or right -of way shall extend a minimum of 10 feet <br />beyond all turnaround features including snow storage areas and overhang areas. <br />D. All turnarounds shall include at least 300 square feet of snow storage that is outside the driving <br />surface. 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 />1. Temporary dead end roads where the potential for future connectivity exists due to the <br />proximity of underdeveloped properties shall have turnaround provisions. A barricade <br />meeting MUTCD standards shall also be provided unless approved by the county engineer. <br />2. Temporary dead ends or a shared access may be required for subdivisions. <br />3. Removal of the temporary turnaround and extension of the future road shall be the <br />responsibility of the applicant who extends the road. <br />F The following shall apply to permanent dead end roadways in excess of 600 feet from the centerline <br />of another county or private road. <br />1. Permanent dead end roadways in excess of 600 feet from the centerline intersection of <br />another county or private road are discouraged and shall only be allowed with the approval <br />of the County Engineer in cases where geographical, topographic, or environmental <br />conditions preclude connections with other roads. <br />Title 12 Kittitas County Code I Draft No. 5 — Working Draft forAdoption 6/12/2018 <br />44 <br />