§ 155.06 DESIGN STANDARDS.
   (A)   Streets and alleys; general requirements. The streets shall be designed and located in relation to existing and proposed streets, to the topography, to economical utility service, to such natural features as streams and tree growth to public convenience and safety, and to the proposed use of the land to be served by such streets. The arrangements, width grade and locations of all streets shall conform to the Official Map and Master Plan, and where applicable, the plans of any political subdivision superseding the authority of the village.
   (B)   Arrangement.
      (1)   Major streets and highways. Major streets and highways shall be properly integrated with the existing and proposed system of major streets and highways and insofar as practicable shall be continuous and in alignment with existing planned or platted streets with which they are to connect.
      (2)   Collector streets. Collector streets shall be properly related to the mass transit system, to special traffic generating from facilities such as schools, churches and shopping centers, to population concentrations and to major streets into which they feed.
      (3)   Minor streets. Minor streets shall be designed to conform to the topography, to discourage use by through traffic, to permit the design of efficient drainage and sewer system, and to require the minimum amount of street necessary to provide convenient safe access to abutting property.
      (4)   Treatment of railroad right-of-way or limited-access highways. Where a subdivision borders on or contains a railroad right-of-way or limited-access highway right-of-way, the Village Board may require a street approximately parallel to and on each side of such right-of-way, at a distance suitable for the appropriate use of the intervening land as for park purposes, in residential districts or for commercial or industrial purposes in other districts. Location of minor streets immediately adjacent and parallel to railroad rights-of-way shall be avoided.
      (5)   Protection of major streets and highways where a subdivision borders on or contains a major street or highway. The Village Board may require that marginal access streets be provided, or that the backs of lots (reversed frontage) be provided with screen planting contained in a non-access reservation along the real property line.
   (C)   Alleys. Alleys shall be provided in commercial or industrial districts for off-street loading and service access unless otherwise required by the Village Board but shall not be approved in residential districts. No dead-end alleys shall be approved; nor shall any alley have its point of connection on a major thoroughfare. The width of an alley shall not be less than 30 feet.
   (D)   Intersections.
      (1)   Streets shall intersect each other as nearly as possible at right angles, as good design and topography permit.
      (2)   Not more than two streets shall intersect at one point unless approved by the Village Board.
      (3)   Property lines at street intersections shall not be rounded except in industrial areas or on major or collector streets when required by the Village Board.
      (4)   Street jogs with centerline offsets of less than 125 feet shall be avoided. Where streets intersect major streets, their alignment shall be continuous.
   (E)   Street width. The right-of-way and roadway of all streets shall be the width specified on the Official Map or Master Plan. If no width is specified thereon, they shall be not less than the width specified below, nor more than the maximum grade also specified below:
 
Type of Street
R.O.W. Width
Road Width
Max. Grade
Major and highways
120
36x2
4%
Collector
80
44
6%
Minor
66
40
8%
Alleys
30
24
-
 
   (F)   Vertical curves. All changes in street grades shall be connected by vertical curves of a minimum length equivalent in feet to 15 times the algebraic difference in the rates of grade for arterial and collector streets, and one-half this minimum for local streets.
   (G)   Radii of curvature. When a continuous street centerline deflects at any one point more than five degrees, a circular curve shall be introduced having a radius of curvature on said centerline of not less than the following:
 
Major streets
300 feet
Collector streets
200 feet
Minor streets
100 feet
 
   (H)   Tangents. A tangent at least 100 feet long shall be introduced between reverse curves on arterial and collector streets. On all streets at least 100 feet of tangent shall be provided between the curve and any intersection.
   (I)   Cul-de-sac or dead-end streets. Streets designed to have one end permanently closed shall not exceed 500 feet in length and shall terminate with a turnaround of not less than 120 feet in diameter of right-of-way and a roadway turnaround of 94 feet in diameter.
   (J)   Half-streets. Where an existing half street is adjacent to the tract bring subdivided, the other half of the street shall be dedicated by the subdivider.
   (K)   Reverse strip. There shall be no reverse strips controlling access to streets except where control of such strips is definitely place in the village under conditions approved by the Village Board.
      (1)   Cluster development. The standards application to street right-of-way and roadway widths may be waived by consent of the Village Board for special situations such as cluster developments, where other well-planned interior street systems are provided.
      (2)   Easements.
         (a)   Easements of widths deemed adequate by the Village Board for the intended purpose across lots or on rear or side lot lines shall be provided where necessary for the construction and maintenance of telephone, electric, gas, water, sanitary sewer, storm sewer and utilities deemed necessary by the Village Board.
         (b)   Where a subdivision is traversed by watercourse drainage way, channel or stream, an adequate drainage way or easement shall be provided as required by the Village Board, conforming substantially with the lines of such watercourse. The location, width, alignment and improvement of such drainage way or easement shall be subject to approval of the Village Board.
      (3)   Blocks.
         (a)   The lengths, widths and shapes of blocks shall be compatible to the planned use of the land and the type of development contemplated.
         (b)   Facilities for distribution of electric, telephone and gas utility services located within a subdivision shall be installed underground except where the Village Board finds that adverse soil conditions or problems of utility distribution make such installation prohibitively expensive or impractical. Transformers, junction boxes, meter points or similar equipment may be installed upon the ground surface, if the location and utility-approved landscape-screening plan therefor have been approved by the Village Board.
      (4)   Lots.
         (a)   The size, shape and orientation of the lots shall be appropriate for the location of the subdivision and for the type of development and use contemplated.
         (b)   Lot dimensions shall conform to the requirements of the zoning chapter.
         (c)   Residential lots, fronting on major streets and highways, shall be platted with extra depth to permit generous distances between the buildings and such traffic ways.
         (d)   Excessive depth in relation to width shall be avoided and a proportion of 2:1 shall normally be considered as a desirable maximum for lots of 80 feet or more.
         (e)   Depth and width of properties reserved or laid out for commercial or industrial use shall be adequate to provide for the off-street service and parking facilities required by the type of use and development contemplated.
         (f)   Every lot shall front or abut on a public street.
         (g)   Side lot lines shall be right angles to straight street lines or radii to curved street lines on which the lots face, whenever possible.
         (h)   Corner lots shall have an extra width of ten feet to permit adequate building setbacks from side streets.
         (i)   In cedes a tract is divided into large parcels, such parcels shall be arranged as to allow the re-subdivision on any such parcels into normal lots in accordance with the provisions of this chapter.
         (j)   Lots shall follow municipal boundary lines rather than cross them.
         (k)   Double frontage and reverse frontage lots shall be prohibited except where necessary to provide separation of residential development from through traffic or to overcome specific disadvantages of topography and orientation.
(Prior Code, § 17.06) Penalty, see § 155.99