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Cul-de-sac (rural) 65 feet radius <br />Service 60 feet <br />b. Different widths may be required, depending upon anticipated traffic volume, planned <br />functions of street, and character of abutting land use. <br />c. The classification of street and determined right-of-way width shall be determined by the <br />city comprehensive plan. <br />(2) Where horizontal street lines deflect from each other at any point more than ten degrees, said <br />street lines shall be connected by a curve with a radius of not less than 100 feet for minor streets <br />and of such greater radii in the case of other streets as the planning commission may determine. <br />Streets that shall serve as collector and arterial streets shall have a minimum radius of 310 feet. <br />Such street may be reduced to a minimum of 240 feet providing full super elevation is <br />incorporated in the street design. All municipal state aid (MSA) roads shall meet current MSA <br />standards for horizontal alignment that is dependant dependent upon design speed. <br />(3) Street grades shall not exceed seven percent for minor and collector streets and four percent for <br />thoroughfares, and in no case shall they be less than 0.4 percent. Wherever feasible, grades <br />within 30 feet of street intersections shall not exceed three percent and all private driveways <br />providing access to public right-of-way shall approach to grade level. <br />(4) Different connecting street gradients shall be connected with vertical curves. Minimum length, <br />in feet, of said vertical curves shall be 100 feet or 20 times the algebraic difference in the <br />percentage of grade of the two adjacent gradients. <br />(5) Street jogs in minor and service streets shall have a centerline offset of not less than 150 feet. <br />Street jogs in collector streets shall have a centerline offset of not less than 300 feet. <br />(6) Minor streets shall be so aligned that their use by through traffic will be discouraged. <br />(7) The maximum length of cul-de-sac streets shall be 600 feet, measured along the centerline from <br />the intersection of origin to the end of the right-of-way. Each cul-de-sac shall have a terminus of <br />nearly circular shape with a minimum right-of-way diameter of 130 feet and a minimum roadway <br />diameter of 100 feet. Repealed <br />(8) In those instances where a subdivision abuts or contains an existing or planned thoroughfare or <br />a railroad right-of-way, the planning commission may require a service street approximately <br />parallel to and on each side of such right-of-way. <br />(9) Half streets shall be prohibited except where essential to the reasonable development of the <br />subdivision in conformity with the requirements of this chapter. <br />(10) Private streets shall be permitted in accordance with applicable zoning district. <br />(11) Street rights-of-way shall not be planned so as to cause hardship to owners of adjoining property <br />and their ability to subdivide. <br />(12) The angle formed by the intersection of streets shall not be less than 75 degrees, with 90-degree <br />intersections preferred as measured 100 feet from the intersection. Intersections of more than <br />four corners are prohibited. <br />(13) A tangent of at least 100 feet in length shall be introduced between reverse curves on <br />thoroughfare and collector streets and a tangent of at least 50 feet in length shall be introduced <br />between reverse curves on all other streets, unless otherwise approved by the city engineer. <br />Ordinance #26-18 <br />Page 2 of 3 <br /> <br /> <br />