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6) <br /> <br />Sharp or sudden changes in horizontal and vertical <br />alignment shall be avoided. <br /> <br />7) <br /> <br />Minimum standards shall be increased as necessary <br />where required by poor subgrade soil, traffic <br />volumes, hazardous conditions, or other special <br />circumstances. <br /> <br />s) <br /> <br />For drainage purposes, 1.0% preferred minimum slope; <br />not less than 0.5% slope are to be used. <br /> <br />9) <br /> <br />Proposed trails along County and State highways <br />shall meet the requirements of each of the <br />respective governing bodies. <br /> <br />Lateral clearance each side of the treadway for <br />vertical obstructions (trees, power poles, signs, <br />etc.) shall be provided with a four foot preferred <br />minimum, two foot absolute minimum for bicycle <br />facilities. <br /> <br />Boulevards shall be shaped and graded to match <br />street slope. <br /> <br />Slope towards curb shall be a minimum 0.02'/foot; <br />maximum, 0.04' foot. <br /> <br />Install sings and markers in accordance with Manual <br />of Uniform Traffic Control Devices, most recent <br />edition. <br /> <br />Additional minimum requirements for concrete sidewalks. <br /> <br />1) <br /> <br />Sidewalk along City streets shall be constructed of <br />concrete in accord with City standards unless <br />otherwise directed by the City Engineer. <br /> <br />2) <br /> <br />Sidewalks on County and State roads shall be <br />constructed of bituminous in accord with City <br />standards. <br /> <br />The location of residential sidewalks shall be 9 <br />feet from the back of the curb or edge of pavement <br />to inside edge of sidewalk. An 8 foot wide <br />commercial/industrial sidewalk shall be located four <br />feet from the back of the curb to the inside edge <br />of the sidewalk. Any deviation from the guidelines <br />shall require City approval. <br /> <br />4) <br /> <br />Concrete sidewalks shall conform to the following <br />standards: <br /> <br /> <br />