(a) General requirements.
(1) The street layout shall be logically related to the topography of the land, especially with relations to grades and runoff. Streets shall generally be located away from water-courses, unless storm sewers are to be provided.
(2) Proposed streets shall provide for appropriate continuation or completion of any existing streets that extend to the adjoining property unless otherwise recommended by the Planning Commission. The streets should be so planned as to discourage thru traffic and should intersect as nearly at right angles as possible. Suitable street openings should provide for the subdivision of adjacent land.
(3) Center lines of street openings into opposite sides of another street should intersect or have a minimum distance of 150 feet between center lines.
(4) A. Intersecting local and secondary streets should be a minimum of 1,200 feet apart when emptying into a major thoroughfare.
B. Intersections involving the junction of more than four streets, shall be avoided.
(5) Cul-de-sac streets shall ordinarily have a maximum length of 600 feet unless for topography or other factors justify a greater distance. Such streets shall be provided with a turn around having a minimum radius of fifty feet and a curb radius of forty feet.
(6) Street corners shall be rounded with a radius of twenty-five feet at the property lines. Curbs at intersections shall be rounded with a radius of twenty-five feet, measured from the face of curb. If an intersection occurs at an angle other than right angle, it shall be rounded, at the property line and curb line, with a curve of a radius acceptable to the Planning Commission.
(7) Any roads, temporarily dead ended because of development stages or undeveloped adjacent property shall be provided with a temporary suitable all weather turn around and shall be removed at such time as the road is extended.
(b) Street Alignment.
(1) The minimum radius at the center line for horizontal curves shall be: primary streets, 500 feet, secondary streets, 300 feet and local residential streets, 150 feet.
(2) The tangential distances between reverse curves shall be at least 300 feet for a primary street, 200 feet for a secondary street and 100 feet for a local residential street.
(3) Sight distance should be provided in both horizontal and vertical alignment and shall be at least 400 feet for primary streets, 200 feet for secondary streets and 100 feet for local residential streets.
(4) There shall be a minimum grade of at least five-tenths of one percent on all streets and a maximum grade of six percent on all local streets.
(c) Street Width. Street right-of-way widths and curb widths shall be as shown on existing City plans and where not shown, shall not be less than as follows:
Type of Street | Nature of Development | Pavement Width | Right-of-way |
Local | Single family area | 27' | 50' |
Two or more family areas | 27' | 50' or 60' | |
Commercial or industrial | 32' | 50' or 60' | |
Secondary | Single family area | 27' | 60' |
Two or more family areas | 32' | 60' or 70' | |
Primary | All types of development | 27' minimum or with state aid 48' (divided) | 100' minimum or as determined by state |
(1) Primary highways may have limited access provision as the state highway department may require and shall have Planning Commission approval.
(2) Additional widths may be required by the Planning Commission if required for parking in commercial or multi-family residential areas.
(3) Private streets shall not be approved, nor shall public improvements be approved or petitioned for on any private street.
(4) Dedication of half streets shall be discouraged unless it is a requirement of an official street map.
(5) Reserve strips set up by the subdivider which may prevent access through a subdivision to an adjacent tract shall be prohibited.
(d) Limited Access. Whenever primary streets are designated as "limited access" on the official City map, the subdivision layout shall be designated so as to limit access to a service drive paralleling the private street or front on an adjacent parallel local street with no access rights on the primary street.
(e) Street Names. The developer may name streets; except there shall be no duplication unless streets are continuations of existing streets. All new streets shall be named as follows:
General Direction | Suffix |
North and south | Streets or places |
East and west | Avenues |
Diagonal | Roads or ways |
Curving | Drives, lanes, or circles |
(f) Street Trees. Street trees may be planted by the subdivider in cooperation with the City Engineer and where deemed necessary by the Planning Commission.
(g) Street Cross Section, Curbing, Base Course, Paving Standards.
(1) All street cross sections for local and secondary streets shall be according to the design of the City Engineer and approved by the Planning Commission.
(2) Primary street cross sections shall be designed by the City Engineer and approved by the Planning Commission, or as approved by the State Highway Department where such department is participating with financial aid.
(3) All details of the cross section including crown, curb, pavement, and sub grades, shall be determined by the City Engineer.
(4) Curbing shall be planned whenever required by Planning Commission on the advice of the City Engineer.
(Ord. 62-5165. Passed 4-24-62.)