The subdivider shall dedicate land for and improve streets as provided herein. Streets shall conform to any applicable official map ordinance in effect. In areas for which an official map has not been completed, the street layout shall recognize the functional classification of various street types and shall be developed and located in proper relation to existing and proposed streets, with due regard to topographical conditions, natural features, utilities, land uses, and public convenience and safety. The subdivision shall be designed so as to provide each lot with satisfactory access to a public street as provided herein. The following conditions shall apply for street arrangement in all proposed subdivisions:
A. 
Arterial streets shall be arranged so as to provide ready access to centers of employment, high-density residential areas, centers of government activity, community shopping areas, community recreation, and points beyond the boundaries of the community. They shall also be properly integrated with and related to the existing and proposed system of major streets and highways and shall be, insofar as is practicable, continuous and in alignment with existing or planned streets with which they are to connect.
B. 
Collector streets shall be arranged so as to provide ready collection of traffic from residential 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.
C. 
Minor streets shall be arranged to conform to the topography, to discourage use by through traffic, to permit the design of efficient storm and sanitary sewer systems, and to require the minimum street area necessary to provide safe and convenient access to the abutting property.
D. 
Proposed streets shall extend to the boundary lines of the tract being subdivided unless prevented by topography, environmental constraints, or other physical conditions or unless, in the opinion of the Common Council or Plan Commission, such extension is not necessary or desirable for the coordination of the layout of land division or condominium or for the advantageous development of the adjacent land tracts.
E. 
Arterial street and highway protection. Whenever the proposed land division or condominium contains or is adjacent to an arterial street or highway, adequate protection of residential properties, limitation of access and separation of through and local traffic shall be provided by reversed frontage, with screen planting contained in a nonaccess reservation along the rear property line, or by the use of frontage streets.
F. 
Stream or lake shores shall have 100 feet of public access platted to the low-water mark at intervals of not more than 1/2 mile as required by § 614-12C of this chapter.
G. 
Alleys may be required in commercial and industrial districts to provide for off-street loading and service access but shall not be approved in residential districts unless required by unusual topography or other exceptional conditions. Dead-end alleys shall not be approved, and alleys shall not connect to a federal, state, or county trunk highway.
H. 
Street names shall not duplicate or be similar to existing street names, and existing street names shall be projected wherever possible.[1]
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II).
Whenever the proposed land division or condominium contains or is adjacent to a limited access highway or railroad right-of-way, the design shall provide the following treatment:
A. 
When residential lots within the proposed land division or condominium back upon the right-of-way of an existing or proposed limited access highway or railroad, the following restriction shall be lettered on the face of the plat: "Direct vehicular access to (name of road or railroad right-of-way) from abutting lots is prohibited."
B. 
Commercial and industrial districts shall provide, on each side of the limited access highway 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 150 feet.
C. 
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 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.
D. 
Minor streets immediately adjacent and parallel to railroad rights-of-way should be avoided.
A. 
The minimum right-of-way of all proposed streets shall be as specified on any applicable street plan officially adopted by the City, or, if no width is specified, the minimum right-of-way width shall be as follows:
(1) 
Arterial streets: 120 feet.
(2) 
Collector streets: 80 feet.
(3) 
Minor streets: 66 feet.
(4) 
Frontage streets: 66 feet.
B. 
Minimum roadway width and surface width of all new subdivision roads shall comply with the town road standards contained in § 82.50, Wis. Stats., unless locally adopted City road standards require a different width and cross-section design.
C. 
Cul-de-sac streets designed to have one end permanently closed shall not normally exceed 1,000 feet in length. Such streets shall terminate in a circular turnaround having a minimum right-of-way radius of 60 feet and a minimum roadway radius of 45 feet.
D. 
Temporary termination of streets intended to be extended at a later date shall be accomplished with the construction of a temporary turnaround of 120 feet right-of-way diameter and a roadway of not less than 90 feet in diameter.
E. 
Street grades.
(1) 
Unless necessitated by exceptional topography subject to the approval of the City Plan Commission, the maximum center-line gradient of any street or public way shall not exceed the following:
(a) 
Arterial streets: 6%.
(b) 
Collector streets: 8%.
(c) 
Minor streets, alleys and frontage streets: 10%.
(d) 
Pedestrianways: 12%.
(2) 
The gradient of any street shall in no case exceed 12% or be less than 1/2 of 1%.
F. 
Street grades shall be established wherever practicable so as to avoid excessive grading and removal of ground cover and tree growth and general leveling of the topography. The length of curve required for the vertical grade changes at the street center line is dependent on the design speed and percent of algebraic difference in the intersecting grades. The following information shall be used in the design of vertical curves:
(1) 
Maximum change in grade without a vertical curve (from the State of Wisconsin Department of Transportation's Facilities Development Manual).
(2) 
Design controls on crest vertical curves (from AASHTO's "A Policy of Geometric Design of Highways and Streets").
(3) 
Design controls on sag vertical curves (from AASHTO's "A Policy of Geometric Design of Highways and Streets").
G. 
Radii of curvature. When a continuous street center line deflects at any one point by more than 10°, a circular curve shall be introduced having a radius of curvature on said center line of not less than the following:
(1) 
Arterial streets: 500 feet.
(2) 
Collector streets: 300 feet.
(3) 
Minor streets: 100 feet.
H. 
A tangent at least 100 feet in length shall be provided between reverse curves on arterial and collector streets.
I. 
Half streets shall be prohibited except where:
(1) 
The other half has already been dedicated.
(2) 
Its alignment is shown on an officially adopted street plan.
Streets shall intersect each other as nearly as possible at right angles, and not more than two streets shall intersect at one point unless approved by the Plan Commission.
A. 
The number of intersections along arterial streets and highways shall be held to a minimum. Whenever practicable the distance between such intersections should not be less than 1,200 feet.
B. 
Property lines at street intersections shall be rounded with a minimum radius of 15 feet or of a greater radius when required by the Plan Commission.
C. 
Street jogs with center-line offsets of less than 300 feet shall not be approved.
The widths, lengths, and shapes of blocks shall be suited to the planned use of the land, zoning requirements, need for convenient access, control and safety of street traffic, and the limitations and opportunities of topography.
A. 
Length. Blocks in residential areas should not as a general rule be less than 750 feet nor more than 1,200 feet in length unless otherwise dictated by exceptional topography or other limiting factors.
B. 
Pedestrianways of not less than 10 feet in width may be required near the center and entirely across any block over 900 feet in length where deemed essential by the Common Council to provide adequate pedestrian circulation or access to schools, shopping centers, churches or transportation facilities.
C. 
Width. Blocks shall have sufficient width to provide for two tiers of lots of appropriate depth except where otherwise required to separate residential development from through traffic or where lots abut a lake or stream. Width of lots or parcels reserved or laid out for commercial or industrial use shall be adequate to provide for off-street service and parking required by the use contemplated and the area zoning provisions for such use.
The size, shape, and orientation of lots shall be appropriate for the location of the subdivision and for the type of development and use contemplated. The lots should be designed to provide an aesthetically pleasing building site and a proper architectural setting for the building contemplated.
A. 
Side lot lines should be at right angles to straight street lines or radial to curved street lines on which the lots face. Lot lines shall follow municipal boundary lines rather than cross them.
B. 
Double frontage and reversed 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.
C. 
Access. Every lot shall front or abut on a road for a distance of at least 66 feet, except lots located on a curved street or cul-de-sac which shall front or abut on a road for a distance of at least 30 feet.
(1) 
New lots shall be located along a public road, except where access already exists via private road or shared drive (a shared drive would include an existing access point where more than one property under different ownership is serviced by easement or right at time of ordinance adoption).
(2) 
Where a private road or shared drive already exists, lots may be created if:
(a) 
A road maintenance agreement is established by the subdivider and approved by the City. This agreement shall be executed with the purchase of each lot and shall address the provisions for the long-term maintenance and snow removal of the road, including the specific tasks, schedule, responsible parties, and funding mechanism. Any revisions to this agreement shall also be approved by the City;
(b) 
The road is constructed to at least minimum standards set forth in § 82.50(1)(a), Wis. Stats., for roads serving fewer than a total of 10 existing and new lots or § 82.50(1)(c), Wis. Stats., for roads serving a total of 10 or more existing and new lots. The private road improvement would require City review and inspection expedited through a development agreement between the subdivider and City; and
(c) 
At the creation of the third principal structure the road is required to be named and road sign erected in accordance with City standards and E-911 county addressing provisions.
(3) 
Subsection C(1) and (2) shall not apply to new lots not intended for development purposes. Lots not meeting the requirements of Subsection C(1) and (2) shall be deed restricted from development and shall be recorded as such on the certified survey map or plat.
D. 
Area and dimensions shall conform to the requirements of the City Zoning Ordinance. Lots shall contain sufficient area to permit compliance with all required setbacks, including those set forth in the City Zoning Ordinance and those that may be required to meet the requirements of Ch. Trans 233, Wis. Adm. Code. Whenever a tract is subdivided into parcels with area in excess of the zoning requirements, such parcels should be arranged and dimensioned so as to allow resubdivision of any such parcels into normal lots in accordance with the provisions of this chapter.
E. 
Depth. Lots should be designed with a suitable proportion between width and depth. Neither long, narrow or wide, shallow lots are normally desirable. Normal depth should not exceed two times the width nor be less than 150 feet.
F. 
Width of lots shall conform to the requirements of the City Zoning Ordinance.
G. 
Corner lots shall be designed with extra width to permit adequate building setback from both streets.
H. 
The shape of lots shall be approximately rectangular, with the exception of lots located on a curved street or cul-de-sac. Flag lots shall be prohibited, except where necessary to accommodate exceptional topography or to protect natural resources or the created lot is at least five acres in area.
I. 
Lands lying between the meander line and the water's edge and any otherwise unplattable lands which lie between a proposed subdivision and the water's edge shall be included as part of lots, outlots or public dedications in any plat abutting a lake or stream.
A. 
Drainage easements. Where a subdivision is traversed by a watercourse, drainageway or stream, an adequate drainageway or easement may be required to handle stormwater runoff. The location, width, alignment and improvement of such drainageway or easement shall be approved by the Common Council.
B. 
Utility easements. All utility lines for electric power and telephone service shall be placed on mid-block easements along rear lot lines whenever carried on overhead poles where lots abut a lake or stream. All other utility easements shall be located along rear or side lot lines whenever possible.
Where natural drainage channels, floodplains, wetlands, or other environmentally sensitive areas are encompassed in whole or in part within a proposed land division or condominium, the Common Council may require that such areas be dedicated or that a restriction be placed on the plat or certified survey map to protect such resources. The Common Council may further require that such areas be included in outlots designated on the plat or certified survey map and restricted from development.