2019-025 - Amending Ordinance No. 1315 Subdivision Regulations to Incorporate the Master Thoroughfare Plan

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Arterial intersections shall have property line radii of not less than twenty-five (25) feet. "7. The City shall have the authority to require proposed developments and subdivisions to extend proposed residential streets and residential street right-of- way to adjacent properties where future development or redevelopment is projected to occur. "8. Dead-end streets shall not be approved unless: "a. Such dead-end streets are designed to connect with future streets in adjacent land not yet developed, in which case the streets shall extend to the boundaries of the land being subdivided. "b. In very unusual circumstances, a street may dead-end for topographical reasons or in order to develop a desirable residential plan, in which case the dead-end street shall have a cul-de-sac with a minimum radius of fifty (50) feet measured at the center line of the street. "9. Relation of Adjoining, Streets and Land. The system of streets designated for the subdivision, except in unusual cases, must connect with streets already dedicated in adjacent subdivisions, and where adjacent connections are not platted, must in general be the reasonable projection of streets in the nearest subdivided tracts, and must be continued to the boundaries of the tract subdivided, so that other subdividers may connect therewith. Reserve strips of land controlling access to or egress from other property or to or from any street or alley or having the effect of restricting or damaging the adjoining property for subdivision purposes or which will not be taxable or accessible for special improvements shall not be permitted in any subdivision. "10. Street Grades. The minimum grade for all streets shall be five -tenths (0.5) of one (1) percent. The maximum grade for arterial streets shall be five (5) percent; for collector streets it shall be eight (8) percent; for local streets it shall be ten (10) percent. If natural topography is such as to require steeper grades, the above maximum grade shall be increased by twenty-five (25) percent for a maximum continuous distance of two hundred (200) feet. Center line grade changes with an algebraic difference of more than three (3) percent, and less than five (5) percent, shall be connected with at least a two hundred (200) foot vertical curve. For every additional percent of algebraic difference over five (5) percent, there shall be an additional fifty (50) feet of vertical curve. All algebraic differences in grade below three (3) percent shall have a vertical curve of not less than one hundred (100) feet. Where a cross slope is necessary or desirable from one curb to the opposite curb, such cross slope shall not be more than nine (9) inches on a twenty-eight (28) foot street, or more than twelve (12) inches on a thirty-nine (39) foot street, or more than eighteen (18) inches on a sixty (60) foot street, except where new streets connect to existing streets that require a greater cross slope to connect,