That portion of a driveway that crosses a sidewalk shall be kept as nearly as possible at the same grade as the walk, so as to avoid interference with pedestrian traffic. No steps shall be created in the sidewalk because of any driveway construction, and at no time shall the gradient of the sidewalk that crosses a driveway exceed one foot vertical to ten feet horizontal. The established grade at the gutter or street level shall not be changed by the driveway, and no part of the driveway shall extend beyond the curb or street line in such a manner as to change the grade of the gutter or street or obstruct the free flow of water in the gutter. Where elevations or depressions are necessary in the parkway strip between the curb or street and the sidewalk or property line, the parkway shall be graded on both sides of the driveway to a distance sufficient to create a gradual ascent or descent. At no time shall the gradient exceed one foot vertical to ten feet horizontal.
(Ord. No. 1392, § 1)