SEC. 14-1-70 GENERAL STREET DESIGN STANDARDS.
   (a)   Compliance with Statutes. In laying out a subdivision, the owner shall conform to the provisions of Chapter 236, Wis. Stats., and all applicable Village regulations. In all cases where the requirements of this Chapter are different from the requirements of Chapter 236, the more restrictive provision shall apply.
   (b)   Dedication. The subdivider shall dedicate land and improve streets as provided in this Chapter and Section 14-1-53. Streets shall be located with due regard for topographical conditions, natural features, existing and proposed streets, utilities and land uses and public convenience and safety. Streets shall conform to official maps adopted by the Village Board. The subdivision, certified survey parcel or land division shall be so designed as to provide each lot with satisfactory access to a public street or road.
   (c)   Compliance with Comprehensive Plan and Ordinances.
      (1)    The arrangement, character, features, and layout of land divisions in the Village of Turtle Lake shall be designed to comply with the standards of this Chapter, the Comprehensive Plan, the Official Map, and/or any comprehensive utility plans or other planning documents which may pertain to the standards of design for land divisions and which have been adopted by the Village Board. Where no such planning documents have been adopted, subdivisions shall be designed according to engineering and planning standards approved by the Village Engineer and applied so as to properly relate the proposed development with adjacent development, the topography, natural features, public safety and convenience, and the most advantageous development of undeveloped adjacent lands. The absence of a street being shown on the official map, streets shall be provided in locations determined necessary by the Village Engineer and to the right-of-way widths required in this Article for the classification of street required.
      (2)   The arrangement, character, extent, width, grade, and location of all streets shall conform to Village master plans, the Official Map, and to this Chapter, and other Village planning documents and shall be considered in their relation to: existing and planned streets, reasonable circulation of traffic, topographical conditions, run-off of storm water, public convenience and safety, and in their appropriate relation to the proposed uses of the land to be served by such streets.
      (3)    The arrangement of streets in new subdivisions shall make provision for the appropriate continuation at the same or greater width of the existing streets in adjoining areas.
   (d)   Areas Not Covered by Official Map or Plan. In areas not covered by an Official Map or a Village Comprehensive Plan, the layout of streets shall conform to the plan for the most advantageous development of adjoining areas of the neighborhood. Streets shall be designed and located in relation to existing and officially planned streets, topography and natural terrain, streams and lakes and existing tree growth, public convenience and safety and in their appropriate relation to the proposed use of the land to be served by such streets.
   (e)   Proposed Streets. Proposed streets shall extend to the boundary lines of the tract being subdivided unless prevented by topography or other physical conditions or unless, in the opinion of the Village Board, such extension is not necessary or desirable for the coordination of the layout of the subdivision or land division or for the advantageous development of the adjacent tracts.
   (f)    Streets Classifications.  Streets shall be required and classified by the Village Engineer in accordance with the Village's Comprehensive Plan and where not identified in said plan, in accordance with sound engineering standards, into the classifications indicated below:
      (1)   Arterial Streets. Arterial streets shall be arranged to provide through traffic for a heavy volume of vehicles. Arterial streets shall have a right-of-way width of not less than eighty-six (86) feet for a median-divided roadway, nor less than sixty-six (66) feet for a single roadway, with a roadway width of thirty-six (36) feet.
      (2)   Collector Streets. Collector streets shall be arranged so as to provide ready collection of traffic from individual areas and conveyance of this traffic to the major street and highway system and shall be properly related to special traffic generators such as schools, churches and shopping centers and other concentrations of population and to the major streets into which they feed. Collector streets have a right-of-way width of not less than sixty-six (66) feet, with a roadway width of thirty-six (36) feet.
      (3)   Local/Minor Streets.  Local streets shall be arranged to conform to the topography, to discourage use by through traffic, to permit the design of efficient storm and sanitary sewerage systems, and to require the minimum street area necessary to provide safe and convenient access to abutting property.  Local streets have a right-of-way width of not less than sixty (60) feet, with a roadway width of thirty-two (32) feet.
      (4)   Alleys.  Alleys shall be located at rear property lines, shall discourage through traffic, shall serve less than fifty (50) vehicles/day, shall be intended to provide access to off-street loading and service areas and not primary access to parcels.
   (g)   Reserve Strips. Reserve strips shall not be provided on any plat to control access to streets or alleys, except where control of such strips is placed with the Village under conditions approved by the Village Board.
   (h)    Extraterritorial Streets. Streets located in the extraterritorial plat jurisdiction of the Village shall provide for the dedication of the minimum widths of right-of-way in accordance with the standards of this Chapter. Extraterritorial streets within the Urban Service Area shall be provided to the structural standards of this Chapter and minimum pavement widths of twenty-four (24) feet and without curb and gutter. Other streets within the extraterritorial plat jurisdiction of the Village shall meet or exceed the town road standards of Sec. 86.26, Wis. Stats.
   (i)    Alleys; Cul-de-Sac Streets.
      (1)   Commercial and Industrial. Alleys shall be provided in all commercial and industrial districts, except that the Village Board, upon the Plan Commission's recommendation, may waive this requirement where other definite and assured provision is made for service access, such as off-street loading and parking, consistent with and adequate for the uses proposed. The width of the right-of-way for residential alleys shall be not less than twenty-four (24) feet and the width of the right-of-way for commercial and industrial alleys shall be not less than thirty (30) feet. Alley rights-of-way shall be fifty (50) feet. Alleys shall be constructed according to base and surfacing requirements for streets.
      (2)   Residential. Alleys shall not be approved in residential areas unless necessary because of topography or other exceptional circumstances.
      (3)   Dead End.  Dead-end alleys are prohibited except under very unusual circumstances, and crooked and "T" alleys shall be discouraged. Temporary dead-end streets shall not be over one thousand (1,000) feet in total length, shall provide for an eventual intersection spacing meeting the requirements of this Chapter and shall provide for temporary cul-de-sacs or turn arounds as approved by the Village Engineer.
      (4)   Cul-de-Sac Streets. Cul-de-sac streets designed to have one (1) end permanently closed shall not exceed seven hundred (700) feet in length and shall terminate with a turnaround of not less than one hundred twenty (120) feet in diameter and a roadway turnaround of ninety-six (96) feet in diameter. In all cul-de-sacs, there shall be an unobstructed sight distance from the intersection of the intersecting street to the far end of the cul-de-sac bulb.
   (j)   Continuation. Streets shall be laid out to provide for possible continuation wherever topographic and other physical conditions permit. The use of cul-de-sacs shall be held to a minimum and permanently dead ended streets shall be prohibited. Provisions shall be made so that all proposed streets shall have a direct connection with, or be continuous and in line with, existing, planned or platted streets with which they are to connect.  Proposed streets shall be extended to the boundary lines of the tract to be subdivided, unless prevented by topography or other physical conditions, or unless in the opinion of the Village Board, upon the recommendation of the Plan Commission, such extension is not necessary or desirable for the coordination of the layout of the subdivision with existing layout or the most advantageous future development of adjacent tracts.
   (k)    Minor Streets.  Minor streets shall be so laid out so as to discourage their use by through traffic.
   (l)   Frontage Roads. Where a land division abuts or contains an existing or proposed arterial highway, or railroad right-of-way, the subdivider shall provide a frontage road, platted access restriction along the property contiguous to such highway, or such other treatment as may be determined necessary by the Village Engineer to ensure safe, efficient traffic flow and adequate protection of residential properties.
   (m)   Private Streets.  Private streets shall not be approved nor shall public improvements be approved for any private street; all streets shall be dedicated for public use.
   (n)    Horizontal Curves. When connecting street lines, deflect from each other at any one point by more than five (5) degrees, they shall be connected by a curve with a radius of not less than one hundred fifty (150) feet on local streets, two hundred fifty (250) feet on collector streets, and four hundred fifty (450) feet on arterial streets.
   (o)    Visibility.  Streets shall afford maximum visibility and safety for motorist, bicycle, and pedestrian use and shall intersect at right angles, where practicable. A minimum sight distance with clear visibility, measured along the centerline, shall be provided of at least five hundred (500) feet on major thoroughfares, two hundred (200) feet on collector-distributor streets, and one hundred twenty (120) feet on all other streets.
   (p)    Tangents.  A tangent at least one hundred (100) feet long shall be required between reverse curves on arterial and collector streets.
   (q)   Street Grades. The grade of major thoroughfares and collector streets shall not exceed six percent (6%) unless necessitated by exceptional topography and approved by the Plan Commission. Grades of local streets shall not exceed ten percent (10%). The minimum grade of all streets shall be four-tenths percent (.4%).
   (r)    Vertical Curves.  All changes in street grades shall be connected by vertical curves of a minimum length, in feet, equivalent to twenty (20) times the algebraic difference in the rate of grade for major thoroughfares, and one-half (½) this minimum length for all other streets.
   (s)   Half Streets.  Half streets shall not be platted unless necessary to provide the full width of an existing street platted to half width. All newly platted streets shall be platted to the required full width. Where a half street exists adjacent to a proposed land division, the subdivider shall endeavor to acquire and dedicate the remaining half street.
   (t)   Intersections.
      (1)   Angle of Intersect.  Streets shall intersect each other at as nearly right angles as topography and other limiting factors of good design permit. The curved street shall intersect another street with not less than fifteen (15) feet of tangent right-of-way between the end of curvature and the right-of-way of the street being intersected.
      (2)   Number of Streets Converging. The number of streets converging at one (1) intersection shall be reduced to a minimum, preferably not more than two (2). Cross-type intersections on local streets shall be avoided whenever possible in favor of T-type intersections. Intersections of local streets shall be at least one hundred twenty-five (125) feet from each other.
      (3)   Number of Intersections -- Arterial Streets. The number of intersections along arterial streets shall be held to a minimum. Wherever practicable, the distance between such intersections shall be not less than one thousand two hundred (1,200) feet, unless otherwise determined by the Village Engineer to provide better safety.
      (4)   Local Street Spacing. Local streets and frontage roads intersecting with other local streets or collector streets shall, wherever practicable, be spaced no closer than one hundred fifty (150) feet between right-of-way lines, nor closer than two hundred fifty (250) feet to the right-of-way of an arterial street.
      (5)   Property Lines at Street Intersections. Property lines at street intersections shall be rounded with a minimum radius of twenty-five (25) feet or of a greater radius when required by the Village Engineer.
      (6)   Local Streets. Local streets shall not necessarily continue across arterial or collector streets, but if the centerlines of such local streets approach the major streets from opposite sides within three hundred (300) feet of each other, measured along the centerline of the arterial or collector streets, then the location shall be so adjusted that the adjoinment across the major or collector street is continuous and a jog is avoided.
      (7)   Additional Sight Easements. At any intersection determined by the Village Engineer, restricted development easements or additional street right-of-way shall be platted to provide for adequate sight distances in every direction of travel. At a minimum, the subdivider shall grade, clear or otherwise provide for an unobstructed sight triangle at all intersections incorporating the area within a triangle formed by the intersection of the street right-of-way lines and a point on each right-of-way line being not less than thirty (30) feet from the intersection point.
   (u)   Street Names.
      (1)    New street names shall not duplicate the names of existing streets, but streets that are continuations of others already in existence and named shall bear the names of the existing streets. Street names shall be subject to approval by the Village Board.
      (2)    All streets shall be named in conformity with the street naming plan of the Village or with adjoining streets.  In the case of diverging streets, the name shall be repeated. New street names shall not duplicate the names of existing streets, provided, however, that streets that are obviously in alignment with others already existing and names shall bear the names of the existing streets. Long or continuous thoroughfares running north and south shall be named avenues; those running east and west shall be named streets; diagonal thoroughfares shall be named roads; and curving thoroughfares shall be named drives. Short or discontinuous thoroughfares running north and south shall be named courts; those running east and west shall be named places; diagonal thoroughfares shall be named ways; and curving thoroughfares shall be named lanes.
   (v)   Limited Access Highway and Railroad Right-of-way Treatment. Whenever the proposed subdivision contains or is adjacent to a limited access highway, arterial street or railroad right-of-way, the design shall provide the following treatment:
      (1)   Subdivision Lots. When lots within the proposed subdivision back upon the right-of-way of an existing or proposed limited access highway or a railroad, a planting strip at least thirty (30) feet in depth shall be provided adjacent to the highway or railroad in addition to the normal lot depth. This strip shall be part of the platted lots but shall have the following restriction lettered on the face of the plat: "This strip reserved for the planting of trees and shrubs, the building of structures hereon prohibited."
      (2)    Commercial and Industrial Districts.  Commercial and industrial districts shall have provided, on each side of the limited access highway, arterial street or railroad, streets approximately parallel to and at a suitable distance from such highway or railroad for the appropriate use of the land between such streets and highway or railroad, but not less than one hundred fifty (150) feet.
      (3)   Streets Parallel to a Limited Access Highway. Streets parallel to a limited access highway or railroad right-of-way, when intersecting a major street and highway or collector street which crosses said railroad or highway, shall be located at a minimum distance of two hundred fifty (250) feet from said highway or railroad right-of-way. Such distance, where desirable and practicable, shall be determined with due consideration of the minimum distance  required for the future separation of grades by means of appropriate approach gradients.
      (4)   Minor Streets. Minor streets immediately adjacent and parallel to railroad rights-of-way shall be avoided, and location of minor streets immediately adjacent to arterial streets and highways and to railroad rights-of-way shall be avoided in residential areas.