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Kittitas County, WA Downloaded from https://ecode360.com/KI6857 on 2025-07-02 § 12.04.04.040. Public roads. Public Roads shall comply with the following conditions: 1. Road surfacing requirements shall be in accordance with the KC Standard Plans and the WSDOT Pavement Guide, Volume 1 Pavement Policy, current edition. 2. The minimum design speed for all roads shall be 25 MPH. Design speeds shall be based upon WSDOT Design Manual, current edition. Entire road segments shall be designed at the same speed. Minimum design speeds for classified roads are included in the Typical Roadway Sections according to road way classification. See KC Standard Plans 1-8. 3. Intersections. a. Location of new arterial and collector streets shall be in accordance with the WSDOT Design Manual, current edition. b. All new intersections will have a minimum straight tangent length prior to beginning any curves in accordance with the WSDOT Design Manual, current edition. c. The design of intersections on arterial streets shall be in accordance with the WSDOT Design Manual, current edition. d. Separation of intersections shall be in accordance with WSDOT Design Manual, current edition. 4. Residential streets should be designed to direct traffic to collector streets and adequately provide for circulation and movement within the subdivision. 5. Vertical alignment - Connection with existing streets shall be smooth transitions and existing grades shall be shown for at least 150 ft on all sides of the connection. Vertical alignment designs shall be in accordance with the applicable WSDOT or AASHTO Design Manual. 6. The grade and ground lines of all streets that dead end, except cul-de-sacs, shall be continued for 500 ft beyond the proposed construction, unless that property is under different ownership. The grade and ground lines of all arterials shall be designed to continue 1000 ft beyond the end of proposed construction unless that property is under different ownership. 7. Sight triangle standards shall be in accordance with the WSDOT Design Manual, current edition. Site triangles shall be shown on the preliminary and final land segregation documents. Site triangles shall apply to all private and public roads. Plat notes and covenants shall reflect that site triangles shall be kept free of all trees, bushes, landscaping, fences or obstacles. 8. Street projections into future adjoining subdivisions. a. The location of proposed streets shall allow for the proper conveyance of the storm drainage system. b. Where a street is indicated to dead end into an adjacent unplatted area, the applicant shall provide easements or written approval from the adjacent landowner to discharge his storm drainage from the street onto the adjacent land. Exhibit D 4