A.
Compliance with statutes. In laying out a subdivision,
the owner shall conform to the provisions of Ch. 236, Wis. Stats.,
and all applicable Town regulations. In all cases where the requirements
of this chapter are different from the requirements of Ch. 236, Wis.
Stats., the more restrictive provision shall apply.
B.
Dedication. The subdivider shall dedicate land and improve streets as provided in this chapter and § 350-25. 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 Town 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. In any new subdivision,
the street layout shall conform to the arrangement, width and location
indicated on the Official Map, County Jurisdictional Highway System
Plan, Comprehensive Plan or plan component or precise neighborhood
unit development plan of the Town of Trenton, Washington County, Wisconsin.
In areas for which such plans have not been completed, the street
layout shall recognize the functional classification of the various
types of streets and shall be developed and located in proper relation
to existing and proposed streets, to the topography, to such natural
features as streams and tree growth, to public convenience and safety,
to the proposed use of the land to be served by such streets, to existing
or planned utilities and to the most advantageous development of adjoining
areas. The subdivision shall be designed so as to provide each lot
with satisfactory access to a public street.
D.
Areas not covered by Official Map. In areas not covered
by a Town 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.
Street classifications. Streets shall be classified
as indicated below:
(1)
Arterial streets. Arterial streets, as hereinafter
defined, shall be arranged so as to provide ready access to centers
of employment, centers of governmental 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 practicable, continuous and in alignment
with existing or planned streets with which they are to connect.
(2)
Collector streets. Collector streets shall be arranged
so as to provide ready collection of traffic from commercial and 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.
(3)
Minor streets. 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 sewerage systems
and to require the minimum street area necessary to provide safe and
convenient access to abutting property.
(4)
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 Town 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.
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 Town under conditions approved by
the Town Board.
G.
Alleys.
(1)
Commercial and industrial. Alleys shall be provided
in all commercial and industrial districts for off-street loading
and service access, except that the Town Board 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.
(2)
Residential. Alleys shall not be approved in residential
areas unless necessary because of topography or other exceptional
circumstances.
(3)
Width. The width of alleys shall not be less than
24 feet.
(4)
Dead-end alleys. Dead-end alleys are prohibited, and
crooked and "T" alleys shall be discouraged.
H.
Continuation. Streets shall be laid out to provide
for possible continuation wherever topographic and other physical
conditions permit. Provision 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 Town 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. Dead-end streets not over 500 feet in length will
be approved when necessitated by the topography.
I.
Minor streets. Minor streets shall be so laid out
so as to discourage their use by through traffic.
J.
Number of intersections. The number of intersections
of minor streets with major streets shall be reduced to the practical
minimum consistent with circulation needs and safety requirements,
preferably not more than two.
K.
Frontage roads. Where a subdivision abuts or contains
an existing or proposed arterial highway, the Town Board may require
a frontage road, nonaccess reservation along the rear of the property
contiguous to such highway or such other treatment as may be necessary
to ensure safe, efficient traffic flow and adequate protection of
residential properties.
L.
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.
M.
Visibility. Streets shall afford maximum visibility
and safety and shall intersect at right angles where practicable.
As required by the Town Engineer, sufficient vision clearance triangles
shall be provided at intersections.
N.
Tangents. A tangent at least 100 feet long shall be
required between reverse curves on arterial and collector streets.
O.
Street grades.
(1)
Unless necessitated by exceptional topography, subject
to the approval of the Town Board, the maximum center-line grade of
any street or public way shall not exceed the following:
(2)
The grade of any street shall in no case exceed 12%
or be less than 1/2 of 1%.
(3)
Street grades shall be established wherever practicable
so as to avoid excessive grading, the promiscuous removal of ground
cover and tree growth, and general leveling of the topography.
P.
Radii of curvature.
(1)
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:
(2)
Curves should be provided when center-line deflections
exceed 1° in rural areas and in urban areas when deflection exceeds
3°.
Q.
Half streets. Where an existing dedicated or platted
half street is adjacent to the subdivision, the other half street
shall be dedicated by the subdivider. The platting of half streets
should be avoided where possible.
R.
Intersections.
(1)
Property lines at street intersections of major thoroughfares
shall be rounded with a radius of 15 feet or of a greater radius where
the Town Engineer considers it necessary.
(2)
Streets shall intersect each other at as nearly right
angles as topography and other limiting factors of good design permit.
(3)
The number of streets converging at one intersection
shall be reduced to a minimum, preferably not more than two.
(4)
Minor and collector streets shall not necessarily
continue across arterial streets. If the distance between the center-line
intersection of any street with any other intersecting street is less
than 250 feet, measured along the center line of the intersecting
street, then the location shall be so adjusted that the distance is
increased or the adjoinment across the intersecting street is continuous
and a jog is avoided.
S.
Street names. 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
Plan Commission and Town Board.
T.
Culs-de-sac.
(1)
Cul-de-sac streets designed to have one end permanently
closed shall not exceed 1,500 feet in length. All cul-de-sac streets
designed to have one end permanently closed shall terminate in a circular
turnaround having a minimum right-of-way radius of 78 feet and a minimum
face of curb radius of 56 feet on urban sections and a minimum outside
pavement radius of 56 feet on rural sections.
[Amended 5-1-2012 by Ord.
No. 2012-01]
(2)
Temporary termination of streets. Temporary termination
of streets intended to be extended at a later date shall be accomplished
with a temporary cul-de-sac in accordance with the standards set forth
above, or by the construction of a temporary "T" intersection 34 feet
in width and 66 feet in length abutting the right-of-way lines of
the access street on each side.
(3)
In the event a temporary termination of a street intended for extension at a later date under Subsection T(2) of this section has been established and said temporary termination exists for a period of 10 years or longer without permanent extension, the Town Board may, in its discretion, allow the construction of a permanent termination notwithstanding the length requirements of Subsection T(1) of this section.
U.
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 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 properties 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 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 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.
V.
Width. The minimum right-of-way and roadway width of all proposed streets and alleys shall be as specified by the Comprehensive Plan, Comprehensive Plan component, Official Map, neighborhood development plan or jurisdictional highway system plan, or, if no width is specified therein, the minimum widths shall be as set forth in § 345-15 of this Code.
[Amended 2-6-2007 by Ord.
No. 2-1-2007]
W.
New and replacement bridges and culverts. All new
and replacement bridges and culverts over perennial waterways, including
pedestrian and other minor bridges, in addition to meeting other applicable
requirements, shall be designed so as to accommodate the one-hundred-year
recurrence interval flood event without raising the peak stage, either
upstream or downstream, more than one 0.01 foot above the peak stage
for the one-hundred-year recurrence interval flood, as established
in the applicable federal flood insurance study. Larger permissible
flood stage increases may be acceptable for reaches having topographic
land use conditions which could accommodate the increased stage without
creating additional flood damage potential upstream or downstream
of the proposed structure. Such bridges and culverts shall be so designed
and constructed as to facilitate the passage of ice flows and other
debris. All new and replacement bridges shall be constructed in accordance
with all applicable state statutes and codes and shall be submitted
to the Department of Natural Resources to assure compliance therewith.
X.
Stream and lake shores. Stream or lake shores shall
have a minimum of 60 feet of public access platted to the low-water
mark at intervals of not more than 1/2 mile as required by § 236.16(3),
Wis. Stats.
A.
Length; arrangement. The lengths, widths and shapes
of blocks shall be appropriate for the topography and the type of
development contemplated, but block length in residential areas shall
not exceed 1,200 feet nor have less than sufficient width to provide
for two tiers of lots of appropriate depth between street lines. As
a general rule, blocks shall not be less than 500 feet in length.
B.
Pedestrian pathways. Pedestrian pathways, not less
than 20 feet wide, may be required by the Town Board, upon the recommendation
of the Plan Commission, through the center of a block more than 900
feet long, where deemed essential to provide circulation or access
to schools, parks, churches, playgrounds, shopping centers, transportation
and other community facilities.
C.
Width. The width of blocks shall be wide enough to
provide for two tiers of lots of appropriate depth except where otherwise
required to separate residential development from through traffic.
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 restrictions
for such use.
D.
Utility easements. Utility easements for electric
power and telephone service shall, where practical, be placed on mid-block
easements along rear lot lines, be not less than 10 feet centered
on the property line and, where possible, be along rear lot lines
for underground construction.
A.
Size. The size, shape and orientation of lots shall
be appropriate for the location or topography of the subdivision,
the type of sewerage or septic system to be utilized, and for the
type of development contemplated, provided that no lot shall be smaller
in area than the minimum lot size for the appropriate zone as established
by the Town of Trenton Zoning Code.[1]
B.
Commercial lots. Depth and width of properties reserved
or laid out for commercial or industrial purposes shall be adequate
to provide for the off-street service and parking facilities required
by the type of use and development contemplated, as required by the
Town Zoning Code.
C.
Lots where abutting major highway. Residential lots
fronting on major streets and highways shall be platted with extra
depth or design or alleviate the effect of major street traffic on
residential occupancy.
D.
Corner lots. Corner lots for residential use shall
have extra width of 10 feet to permit full building setback from both
streets.
E.
Access to public streets. Every lot shall front or
abut for a minimum distance of at least 66 feet on a public street.
Lots with an access only to private drives or streets shall be permitted
only with Town Board approval.
F.
Side lots. Side lot lines shall be substantially at
right angles to or radial to abutting street lines. Lot lines shall
follow Town boundary lines.
G.
Double and reversed frontage lots. Double frontage
and reversed frontage lots shall be avoided except where necessary
to provide separation of residential development from traffic arteries
or to overcome specific disadvantages of topography and orientation.
H.
Natural features. In the subdividing of any land,
regard shall be shown for all natural features, such as tree growth,
watercourses, historic spots or similar conditions which, if preserved,
will add attractiveness and stability to the proposed development.
I.
Land remnants. All remnants of lots below minimum
size left over after subdividing of a larger tract must be added to
adjacent lots, or a plan shown as to future use, rather than allowed
to remain as unusable parcels.
J.
Large lots. Where lots are created of a size larger
than normal for the area, the Plan Commission may require that the
plat be so designed as to allow for the possible future resubdivision
of such lots into normal sizes compatible with the area.
K.
Lot area and dimensions. Area and dimensions of all
lots shall conform to the requirements of the Town of Trenton Zoning
Code.
L.
Lot depth. Depth of lots shall be a minimum of 100
feet. Excessive depth in relation to width shall be avoided and a
proportion of two to one shall be considered a desirable ratio under
normal conditions. Depth 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.
M.
Lot width. Width of lots shall conform to the requirements
of the Town Zoning Code, or other applicable ordinance, and in no
case shall a lot be less than 125 feet in width at the building setback
line.
A.
Drainage system required. As required by § 350-29, a drainage system shall be designed and constructed by the subdivider to provide for the proper drainage of the surface water of the subdivision and the drainage area of which it is a part. A final plat shall not be approved until the subdivider shall submit plans, profiles and specifications as specified in this section, which have been prepared by a registered professional engineer and approved by the Town Board, upon the recommendations of the Plan Commission and Town Engineer.
B.
Drainage system plans.
(1)
The subdivider shall submit to the Town at the time
of filing a preliminary plat a preliminary drainage plan or engineering
report on the ability of existing watercourse channels, culverts and
other improvements pertaining to drainage or flood control within
the subdivision to handle the additional runoff which would be generated
by the development of the land within the subdivision. Additional
information shall be submitted to adequately indicate that provision
has been made for disposal of surface water without any damage to
the developed or undeveloped land downstream or below the proposed
subdivision. The report shall also include:
(2)
A grading plan for the streets, blocks and lots shall
be submitted by the subdivider for the area within the subdivision.
(3)
The design criteria for storm drainage systems shall
be based upon information provided by the Town Engineer.
(4)
Material and construction specifications for all drainage
projects (i.e., pipe, culverts, seed, sod, etc.) shall be in compliance
with specifications provided by the Town Engineer.
C.
Grading. The subdivider shall grade each subdivision
in order to establish street, block and lot grades in proper relation
to each other and to topography as follows:
(1)
The subdivider shall grade the full width of the right-of-way
of all proposed streets in accordance with the approved plans.
(2)
Block grading shall be completed by one or more of
the following methods:
(a)
A ridge may be constructed along the rear lot
lines which provides for drainage onto the streets.
(b)
Parts of all lots may be graded to provide for
drainage to the street or to a ditch along the rear lot line.
(c)
Draining across rear or side lot lines may be
permitted, provided that drainage onto adjoining properties is skillfully
controlled.
D.
Drainage system requirements. The subdivider shall install all the storm drainage facilities indicated on the plans required in Subsection A of this section.
(1)
Street drainage. All streets shall be provided with
an adequate storm drainage system. The street storm system shall serve
as the primary drainage system and shall be designed to carry street,
adjacent land and building stormwater drainage. No stormwater shall
be permitted to be run into a sanitary sewer system within the proposed
subdivision.
(2)
Off-street drainage. The design of the off-street
drainage system shall include the watershed affecting the subdivision
and shall be extended to a watercourse or ditch adequate to receive
the storm drainage. When the drainage system is outside of the street
right-of-way, the subdivider shall make provisions for dedicating
an easement to the Town to provide for the future maintenance of said
system. Easements shall be a minimum of 20 feet, but the Town may
require larger easements if more area is needed due to topography,
size of watercourse, etc.
E.
Protection of drainage systems. The subdivider shall
adequately protect all ditches to the satisfaction of the Town Board
and Town Engineer. Ditches and open channels shall be seeded, sodded
or paved depending upon grades and soil types. (Generally ditches
or channels with grades up to 1% shall be seeded, those with grades
up to 4% shall be sodded and those with grades over 4% shall be paved.)
A.
General.
(1)
If a proposed subdivision includes land that is zoned
for commercial or industrial purposes, the layout of the subdivision
with respect to such land shall make such provisions as the Town may
require.
(2)
A nonresidential subdivision shall also be subject
to all the requirements of site plan approval set forth in the Town
Zoning and Building Codes.[1] A nonresidential subdivision shall be subject to all the
requirements of this chapter, as well as such additional standards
required by the Town, and shall conform to the proposed land use standards
established by any Town Comprehensive Plan or Official Map and the
Town Zoning Code.
B.
Standards. In addition to the principles and standards
in this chapter, which are appropriate to the planning of all subdivisions,
the applicant shall demonstrate to the satisfaction of the Town Board
that the street, parcel and block pattern proposed is specifically
adapted to the uses anticipated and takes into account other uses
in the vicinity. The following principles and standards shall be observed:
(1)
Proposed industrial parcels shall be suitable in area
and dimensions to the types of industrial development anticipated.
(2)
Street rights-of-way and pavement shall be adequate
to accommodate the type and volume of traffic anticipated to be generated
thereupon.
(3)
Special requirements may be imposed by the Town Board
with respect to street, curb, gutter and sidewalk design and construction.
(4)
Special requirements may be imposed by the Town Board
with respect to the installation of public utilities, including water,
sewer and stormwater drainage.
(5)
Every effort shall be made to protect adjacent residential
areas from potential nuisance from a proposed commercial or industrial
subdivision, including the provision of extra depth in parcels backing
up on existing or potential residential development and provisions
for permanently landscaped buffer strips when necessary.
(6)
Streets carrying nonresidential traffic, especially
truck traffic, shall not normally be extended to the boundaries of
adjacent existing or potential residential areas.