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r-----·----·--·---~- I ~orizontal Control 1 Functional Design Vertical Control Maximum I Class ISpeed (mph) Private street (residential) I 'Minimum Gradient Radius I (percent) (feet) I ---------11,, 1275 I f 127-5~~~-~~~---1, j Public street 130 I I (residential) I I j Pu biic street 1 1 (commercial and industrial) 140 I 400 (Code 1984, § 11.33) Sec. 82-282. -Off-site premises; roadways. (a) Access to improved public or private roadways. No subdivision shall be approved unless the area to be subdivided shall have adequate access from an existing publicly dedicated and opened roadway or on a private roadway open to travel or vehicular use pursuant to an easement between persons or between persons and the city. Such roadway must be suitably improved as required by the city, the state or the county. If the public roadway, including but not limited to existing bridges, drainage structures, lighting, shoulders, base, pavement, alignment or sight distance, is not suitable to handle the proposed additional vehicular traffic from the subdivision, the subdivider at his expense will be responsible for first improving the public roa dway to a standard acceptable to the city, to ensure that the health, safety and welfare of the citizens presently using the roadway and in the future will be protected and will not be adversely affected by the increased use of the roadway caused by the subdivision. Th is improvement shall be accomplish ed prior to final subdivision approval unless the city agrees and the subdivider provides a suitable performance bond to complete the improvements in the subdivider's agreement. (b) Access to improved public roodwoys over existing private roadways. Wherever the area to be subd ivided is to utilize an existing private roadway in order to gain access to the public roadway, such private roadway shall be suitably improved as provided in this section for public roadways. (Code 1984, § 11.32(1)) Sec. 82-283. -On-site roadways. (a) Grading and improvement plan. Roadways shall be graded and improved to conform to the city's construction stan dard s and specifications and sha ll be approved as to design and specifications by the city engineer, in accordance with the construction plans required to be submitted prior to final subdivision approval. (b) Topography and arrangement. (1) Roadways shall be related appropriately to the topography. Roadways shall be curved wherever possible to avoid conformity of lot appearance . All roadways shall be arranged so as to obtain as many as possible of the building sites at or above the grades of the street. Grades of streets shall conform as clos ely as possible to the original topography. A comb ination of steep grades and curves shall be avoided . (2) All streets sha ll be properly integ rat ed with the existing and proposed system of thoroughfares and dedicated rights-of-way as established in the comprehensive municipal plan. (3) All thoroughfares shall be properly related to specific traffic generators, such as industries, business districts, schoo ls , churches , and shopping cente rs; to population den sities; and to the pattern of existing and proposed land uses. (4) Roadways shal l be lai d out to conform as much as possible to the topography, to discourage use by through traffic, to permit efficient drainage and utility systems, and to require the minimum number of roadways necessary to provide convenient and safe access to property. (5) The gridiron roadway pattern need not necessarily be adhered to, and the use of curvi lin ear roadways or U-shaped roadways shall be encouraged where such use will result in a more desirable la yo ut. Page 7