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Municipal Code


Municipal Code

Chapter 19. Subdivision and Platting

Sec. 19-64. Design standards.

All proposed plats and maps shall be reviewed for compliance with the following standards:

(1) Streets. Design standards for streets shall be as follows:

  1. Generally. The streets shall be designed and located in relation to existing and proposed streets, to the topography, 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 arrangement, with grade and locations of all streets, shall conform to the official master street plan, unless amendment of the master street map is first approved as provided at section 30-02 of this Code.
  2. Arrangement. Arrangement of streets shall be in accordance with the following:
    1. Major and minor arterials shall be properly integrated with the existing and proposed system of major and minor arterials, and insofar as practicable, shall be continuous and in alignment with existing, planned or platted streets with which they are to connect.  Minimizing access points is a general requirement for streets carrying this classification.
    2. Collector streets shall be properly related to traffic generating from facilities such as schools, churches and shopping centers, to population concentrations and to the major streets into which they feed.
    3. Local streets shall be designed to conform to the topography, to discourage use by through traffic, to permit the design of efficient drainage and sewer systems and to require the minimum amount of streets necessary to provide convenience and safe access to abutting property.
  3. Protection of major/minor arterials where a subdivision borders on or contains a major/minor arterial. The plan commission may require that there shall be no direct access between a major/minor arterial and the individual lots or parcels in the subdivision:  
    1. that the subdivision be laid out with a minimum number of street connections to a major/minor arterial.
    2. that whenever existing streets provide reasonable and adequate access to a major/minor arterial, the street in a subdivision shall not be open directly onto a major/minor arterial.
    3. that local streets be provided and that the backs of lots abut the major arterials and highways.  Access to streets under the jurisdiction of the Department of Transportation or county may require special permissions, permits, reviews or requirements for street connections.
  4. Alleys. Alleys shall be in accordance with the following:
    1. Alleys may be provided in all business, commercial and industrial districts with Plan Commission approval.
    2. Dead-end alleys are prohibited.
    3. Public alleys shall not be permitted in residential areas.
  5. Intersections. Intersections shall be constructed in accordance with the following:
    1. Streets shall intersect each other at right angles as nearly as possible.
    2. Not more than two streets shall intersect at one point unless approved by the plan commission.
    3. Street jogs with centerline offsets of less than 125 feet shall be avoided. Where streets intersect major streets, their alignment shall be continuous.
  6. Street width. The right-of-way and pavement width of all streets shall be of the width specified on the official map or master plan or, if no width is specified thereon, they shall be not less than the width specified as follows:
  7. Type of StreetRight-of-way WidthPavement Width (face to face of curb)
    1.Major arterial100Minimum 48
    2.Minor arterial80 48 or 41 with one side restricted parking 
    3.Collector7036 or 32 with one side restricted parking
    3.Local6032 or 28 with one side restricted parking
  8. Grades. The grade of major/minor arterials shall not exceed four percent (4%).  Collector streets shall not exceed six percent (6%), and local streets shall not exceed eight percent (8%) unless approved by the Plan Commission. The grade of all other streets shall not exceed eight percent (8%). In no case shall the grade of any street be less than one-half of one percent (0.5%) and such minimum shall not be permitted for sustained distances.
  9. Horizontal curves. Horizontal curves shall be constructed in accordance with the following:
    1. A minimum sight distance with clear visibility measured along the centerline shall be provided of at least 300 feet on major/minor arterials, 200 feet on collector streets and 100 feet on local streets.
    2. When a continuous street centerline deflects at any point more than two degrees, a circular curve shall be introduced having a radius of curvature of such centerline of not less than the following:
      1. Major/minor arterial: 300 feet.
      2. Collector: 200 feet.
      3. Local: 100 feet.
  10. Tangents. A tangent at least 100 feet long shall be introduced between reverse curves on major arterials and collector streets, unless approved by the City Engineer under special circumstances.
  11. Cul-de-sac streets. Streets designated to have one end permanently closed shall not exceed 500 feet in length from the right-of-way of the through street to the center of the cul-de-sac bulb and shall terminate with a turnaround of not less than 120 feet in diameter of right-of-way. Whenever and wherever possible, the use of cul-de-sac streets shall be discouraged.
  12. Boundary streets. Where existing street right-of-way is adjacent to the tract being subdivided, the rest of the needed street right-of-way shall be dedicated by the subdivider.
  13. Street names. New street names shall not duplicate or be similar to existing street names and existing street names shall bear the same name and be projected wherever possible, as designated by the plan commission. All streets running northerly and southerly shall hereafter be designated as "avenues." All streets running easterly and westerly shall hereafter be designated as "streets." Other designations, such as "lane", "circle", "court",  or "drive," may be approved upon recommendation of the plan commission if the subject street is not a through street.

(2) Easements. Design standards for easements shall be as follows:

  1. Easements shall be provided where required by the plan commission for storm and sanitary sewers; gas, water and heat mains; and power, telephone and television cable lines. They shall be at least ten feet in width.
  2. Where a subdivision is traversed by a watercourse, channel or stream an easement shall be provided for an adequate drainageway conforming substantially with the lines and area of such watercourse, channel or stream. The location, width, alignment and any proposed improvement of such drainageway shall be subject to approval of the plan commission. Wherever possible, a stormwater drainage shall be maintained by landscaped, open channels of adequate width and grade to hydraulically achieve maximum potential volumes of flow. Sizes and design details shall be subject to review and approval by the Cit Engineer

(3) Blocks. Design standards for blocks shall be as follows:

  1. The length, width and shapes of blocks shall be compatible with the planned use of the land and the type of development contemplated. Block length in residential areas shall not as a general rule exceed 1,500 feet nor be less than 600 feet between right-of-way lines unless waived by the Plan Commission.
  2. Pedestrian ways or crosswalks, not less than fourteen (14) feet in width, shall be required by the plan commission where deemed essential to provide adequate pedestrian circulation or access to schools, playgrounds, shopping centers, churches, transportation and other community facilities.

(4) Lots. Design standards for lots shall be as follows:

  1. The shape, size and orientation of the lots shall be appropriate for the location of the subdivision and for the type of development and the use contemplated and shall conform to the requirements of existing zoning designations or the Comprenhensive Plan.
  2. Lot dimensions shall conform to the requirements of the zoning code of the governmental unit in which the subdivision is located. In no case shall residential lots have a width of less than thirty 30 feet at the street line on a cul-de-sac, curve, or curvilinear street, nor the minimum lot width of the Municipal Zoning Code at the required setback line.
  3. Residential lots fronting on major/minor arterials shall be platted with sufficient depth to permit adequate separation between the buildings and such traffic ways.
  4. Excessive depth in relation to width shall be avoided and a proportion of two and one-half (2 1/2) to one shall normally be considered as a desirable maximum for lots of seventy (70)  feet or more. Lots shall not be less than 100 feet in depth.
  5. 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.
  6. Every lot shall front or abut on a public street.
  7. Flag lots shall not be allowed.
  8. Side lot lines shall be substantially at right angles to straight street lines or radial to curb street lines on which the lots face.
  9. Corner lots shall have extra widths to provide adequate building setbacks from side streets.
  10. In case a tract is divided into large parcels, such parcels shall be arranged so as to allow the resubdivision of any such parcels into normal lots in accordance with the provisions of this chapter.
  11. Lots shall follow municipal boundary lines rather than cross them.
  12. Double-frontage shall be discouraged except where necessary to provide separation of residential development from through traffic or to overcome specific disadvantages of topography and orientation.
  13. Compliance with Comprehensive Plan and Ordinances.  The arrangement, character, features, and layout of land division in the City of Marshfield 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 Common Council.  Where no such planning documents have been adopted, subdivisions shall be designed according to engineering and planning standards approved by the City 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.  In the absence of a street being shown on the official map, streets shall be provided in locations determined necessary by the City Engineer and to the right-of-way widths required in this Sec. 19-64 (1) g. for the classification of street required.
  14. Parcels and or plat shall contain adequate area to provde for stormwater management requirements per NR151 and NR216.

(5) Public sites and open spaces. In the design due consideration shall be given to the reservation of suitable sites and adequate area for future schools, parks, playgrounds, drainageways and other public purposes. Consideration shall be given to the preservation of scenic and historic areas, trees, marshes, lakes and ponds, watercourses, watersheds and ravines.

(Code 1982, 18.06; Ord. No. 1190, 2, 12-14-2010)