A. Grades: Grades of streets shall not be in excess of ten percent (10%).
B. Pavement: All streets within the City shall be improved with pavement.
C. Standards Of Construction: Pavements shall be constructed in accordance with the requirements of the standards, rules and regulations adopted by the City Council.
D. Urban Streets; Curbs And Gutters: Curbs and gutters on all urban streets shall be concrete of the standard high-back type, not less than two feet (2') in overall width, and not less than seven inches (7") thick where the curb abuts the street pavement. Minimum grades for curb and gutter shall not be less than one- half percent (1/2%).
E. Stormwater Inlets, Catch Basins: Stormwater inlets and catch basins shall be provided within the roadway improvements at points specified by the subdivider and approved by the City Engineer.
F. Curb Corners: All curb corners shall have a radius of not less than twenty five feet (25'). Where streets meet at acute angles, the radii shall be increased.
G. Arrangement Of Streets: The arrangement of streets in new subdivisions shall make provision for the continuation of the existing streets in adjoining areas and shall provide access to unsubdivided adjoining areas insofar as such continuation or access shall be deemed necessary by the Planning Commission.
H. Connection With Existing Streets: New streets must connect with existing public streets.
I. Angle Of Approach: All streets shall approach other streets at an angle of not less than eighty degrees (80°).
J. Curb, Gutter And Sidewalk Installation: The subdivider shall install curbs, gutters and sidewalks on existing and proposed streets in major subdivisions and where curb and gutter are existing in the surrounding neighborhood.
K. Street Number Signs: Street number signs, conforming to the design and specifications and in the number provided by the standards, rules and regulations of the City, shall be provided by the developer at all street intersections. Installation shall be made by City departments, to ensure uniformity, at the expense of the developer.
L. Cul-De-Sacs: Cul-de-sacs (dead end streets designed to be permanently closed to through traffic) shall not be longer than four hundred feet (400') to the beginning of the turnaround. Each cul-de-sac must be terminated by a turnaround of not less than one hundred twenty feet (120') in diameter, measured to the property lines. If surface water drainage is toward the turnaround, due to the grade of the street, necessary catch basins and drainage easements shall be provided. In cul-de-sacs, curb and gutter and street grades shall be a minimum of five percent (5%).
M. Level Of Grade: Streets shall be leveled, when possible, to a grade of less than four percent (4%) for a distance of at least one hundred feet (100') approaching all intersections and at the intersection a grade of three percent (3%) shall be maximum.
N. Changes In Grade: All changes in street grade shall be connected by vertical curves of a minimum length equivalent to fifteen (15) times the algebraic difference in the rate of the grade for major streets and secondary streets and one-half (1/2) of this minimum for all local streets. Vertical curves are not required where the difference in grade change is less than one percent (1%).
O. Curvature On Centerline: Minimum radii of curvature on the centerline shall be as follows: major streets, five hundred feet (500'); secondary streets, three hundred feet (300'); local streets, one hundred feet (100') (or as approved by the City Engineer).
P. Half Streets; Alleys: Wherever there exists a dedicated or platted half street or alley adjacent to the tract to be subdivided, the other half shall be platted; however, in most cases, half streets shall be prohibited.
Q. Width Of Streets Or Roads: The total width of a street or road right-of-way within any subdivision shall be a minimum of sixty six feet (66'), with a minimum of twenty four feet (24') of paved asphalt. The twenty four foot (24') width of paved asphalt may be increased based on a determination from the City Engineer. The balance of the street width is to be used for curb, gutter, sidewalk and a parking strip, or drainage swale, all as required herein, subject to such modification or amendment, including the requirement of a wider street or road, when determined to be necessary, by the Planning Commission and approved by the City Council. Nothing contained herein shall be interpreted as limiting the power of the Planning Commission to also recommend and the power of the City Council to also require wider streets or roads outside a subdivision. (Ord. 13-01, 4-16-2013)