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July 20, 2020 page 46 <br />Functional <br /> Class <br />Design <br />Speed <br />(mph) <br />Vertical <br />Control <br />Maximum <br />Gradient <br />(percent) <br />Horizontal <br />Control <br />Minimum <br />Radius <br />(feet) <br />Private street <br />(residential) 30 12 275 <br />Public street <br />(residential) 30 10 275 <br />Public street <br />(commercial and <br />industrial) <br />40 8 400 <br /> 1954 <br />Sec. 82-282. - Off-site premises; roadways. 1955 <br />(a) Access to improved public or private roadways. No subdivision shall be approved unless the area to 1956 <br />be subdivided shall have adequate access from an existing publicly dedicated and opened roadway or 1957 <br />on a private roadway open to travel or vehicular use pursuant to an easement between persons or 1958 <br />between persons and the city. Such roadway must be suitably improved as required by the city, the 1959 <br />stateState or the county. If the public roadway, including but not limited to existing bridges, drainage 1960 <br />structures, lighting, shoulders, base, pavement, alignment or sight distance, is not suitable to handle 1961 <br />the proposed additional vehicular traffic from the subdivision, the subdivider at theirhis expense will 1962 <br />be responsible for first improving the public roadway to a standard acceptable to the city, to ensure 1963 <br />that the health, safety and welfare of the citizens presently using the roadway and in the future will be 1964 <br />protected and will not be adversely affected by the increased use of the roadway caused by the 1965 <br />subdivision. This improvement shall be accomplished prior to final subdivision approval unless the 1966 <br />city agrees and the subdivider provides a suitable performance bondBond to complete the 1967 <br />improvements in the subdivider's agreementdevelopment contract. 1968 <br />(b) Access to improved public roadways over existing private roadways. Wherever the area to be 1969 <br />subdivided is to utilize an existing private roadway in order to gain access to the public roadway, such 1970 <br />private roadway shall be suitably improved as provided in this section for public roadways. 1971 <br />Sec. 82-283. - On-site roadways. 1972 <br />(a) Grading and improvement plan. Roadways shall be graded and improved to conform to the city's 1973 <br />construction standards and specifications and shall be approved as to design and specifications by the 1974 <br />city engineer, in accordance with the construction plans required to be submitted prior to final 1975 <br />subdivision approval. 1976 <br />(b) Topography and arrangement. 1977 <br />(1) Roadways shall be related appropriately to the topography. Roadways shall be curved wherever 1978 <br />possible to avoid conformity of lot appearance. All roadways shall be arranged so as to obtain as 1979 <br />many as possible of the building sites at or above the grades of the street. Grades of streets shall 1980 <br />conform as closely as possible to the original topography. A combination of steep grades and 1981 <br />curves shall be avoided. 1982 <br />(2) All streets shall be properly integrated with the existing and proposed system of thoroughfares 1983 <br />and dedicated rights-of-way as established in the comprehensive municipal planCommunity 1984 <br />Management Plan. 1985