This section sets forth vehicular access requirements for proposed
site plans for developments which abut arterial, collector, and minor
streets. This chapter recognizes that public streets are a public
investment which require control mechanisms in order to assure both
public safety and functional capacity. Proposed development for residential
and nonresidential uses shall meet the following requirements:
A. Access standards for all residential and nonresidential uses. All
proposed site plans proposed for residential and/or nonresidential
uses located in residential and/or nonresidential zoning districts
shall meet the following standards:
(1)
Controlled access to public streets. Lot and parcel vehicular
access points shall be permitted only at locations in accordance with
this chapter and other Town of Barton adopted plans and ordinances.
The Plan Commission may limit vehicular access to any adjoining arterial,
collector, or minor street.
(2)
Distance between vehicular access points. The spacing of vehicular
access points from arterial streets and highways to lots and parcels
shall be determined as a function of arterial street and highway operating
speeds. The minimum spacing between vehicular access points along
such streets or highways shall be determined according to Table 500-112A.
These spacings are based upon average vehicle acceleration and deceleration
rates and are considered necessary to maintain safe traffic operation.
|
Table 500-112A
Arterial Street and Highway Operating Speed and Minimum
Spacing Between Direct Vehicular Access Points
|
---|
|
Street/Highway Speed Limit
(miles per hour)
|
Minimum Driveway Spacing Measured at the Street Right-of-Way
Line
(feet)
|
---|
|
25
|
105
|
|
30
|
125
|
|
35
|
150
|
|
40
|
185
|
|
45
|
230
|
|
50
|
275
|
|
Source: American Planning Association. Planning Advisory Service
(PAS) Memo, July 1983.
|
(3)
Limitation of access to interstate, United States, and state
trunk highways. No new direct vehicular access shall be allowed to
interstate, United States, and state trunk highway public rights-of-way
unless approved by the Wisconsin Department of Transportation, Washington
County, and the Plan Commission.
(4)
Temporary access.
(a)
Town streets. On Town streets, the Town Board may grant temporary
access to properties and require their closure when access through
adjoining properties is acquired upon recommendation by the Plan Commission.
Such access shall be temporary, revocable, and subject to any conditions
required and shall be issued for a period not to exceed 12 months.
(b)
County streets and highways. Temporary access to Washington
County street and highway rights-of-way is reviewed and may be approved
by the Washington County Highway Department. It is the applicant's
responsibility to obtain all necessary approvals from the Washington
County Highway Department for all such temporary access points proposed
prior to site plan approval by the Town.
(c)
State highways. Temporary access to state highway rights-of-way
is reviewed and may be approved by the Wisconsin Department of Transportation.
It is the applicant's responsibility to obtain all necessary approvals
from the Wisconsin Department of Transportation for all such temporary
access points proposed prior to site plan approval by the Town.
(5)
Area circulation plan may be required. The Plan Commission may
require the preparation of an area circulation plan for the proposed
development covering several properties in an area surrounding a proposed
site plan. The delineation of the area for the preparation of an area
circulation plan shall be determined by the Plan Commission upon recommendation
of either the Town Engineer or Zoning Administrator. Such a plan may
require the sharing of access locations or temporary access. All landowners,
except those with a previously approved site plan, shall be required
to conform to such an area circulation plan once it is adopted by
the Plan Commission as a component, or element, of the Town of Barton
Comprehensive Plan. The Plan Commission may require that such an area
circulation plan be prepared based upon the conduct of a traffic impact
analysis conducted by a licensed professional engineer with expertise
in traffic engineering. The Town Engineer and Zoning Administrator
shall review all such studies and assist the Plan Commission.
(6)
Vehicular nonaccess reservations required. The Plan Commission may require deed restrictions to be placed on a lot or parcel for which a site plan is proposed in order to limit vehicular access to abutting arterial, collector, or minor streets and highways. A landscaped buffer yard of an adequate buffer yard intensity level, as determined by the Plan Commission or by Article
XVIII of this chapter, shall be provided in vehicular nonaccess reservations along the property line abutting a public street right-of-way. In such situations, vehicular access to such lots may be provided by an abutting minor or collector street at designated access driveways. Such vehicular nonaccess reservations shall be graphically so noted on site plans or as a formal deed restriction formally filed with the Washington County Register of Deeds prior to their approval by the Town.
(7)
Arterial street and highway access and street intersections.
No new direct public or private access shall be permitted to an arterial
street or highway within 115 feet of the intersection of the right-of-way
lines of another arterial street or highway; and, where lot or parcel
size permits, no new direct public or private access shall be permitted
to an arterial street or highway within 500 feet of the intersection
of the right-of-way lines of another arterial street.
(8)
Minor streets and vehicular access point alignments. Minor streets
and vehicular access points along both sides of a collector and/or
arterial street shall be aligned to assist in reducing the number
of driveways needed and to improve safety conditions related to access
to the street system.
(9)
Sight distance and driveway placement. Direct vehicular access
placement on abutting collector and arterial streets and highways
shall be such that an exiting vehicle has a minimum unobstructed sight
distance according to Table 500-112B based upon the operating design
speed of the abutting collector or arterial street or highway.
|
Table 500-112B
Highway Design Speed and Minimum Required Sight Distance
for Direct Vehicular Access Point Placement
|
---|
|
Highway Design Speed
(miles per hour)
|
Minimum Sight Distance
(feet)
|
---|
|
30
|
200
|
|
35
|
225
|
|
40
|
275
|
|
45
|
325
|
|
50
|
350
|
|
Source: American Planning Association Planning Advisory Service
(PAS) Memo, July 1983.
|
B. Access standards for nonresidential and multiple-family residential
uses. All proposed site plans proposed for nonresidential and multiple-family
residential uses located in nonresidential and/or multiple-family
residential zoning districts shall meet the following standards:
(1)
Maximum number of vehicular access points per lot. Generally,
along arterial streets and highways (including lots which abut the
frontage roads of said rights-of-way), where the abutting street frontage
is less than 400 feet, a maximum of one vehicular access point shall
be permitted to a particular lot from each of any one or two abutting
arterial streets and highways. One additional driveway entrance along
a single continuous lot with frontage in excess of 400 feet may be
permitted by the Plan Commission. When a shared vehicular access point
is used by two or more abutting lots, said shared vehicular access
point shall be considered as one single vehicular access point for
each lot or parcel served.
(2)
Provision of shared vehicular access points between lots. Vehicular
access points planned to be located along property lines, or within
five feet of a property line, shall be shared vehicular access points
with the abutting lot or parcel. The vehicular access point center
line may be the property line between two lots or parcels of land
or may be a mutually agreed upon land access easement.
(3)
Provision of shared vehicular access points between lots. Vehicular
access points planned to be located along property lines, or within
five feet of a property line, shall be shared vehicular access points
with the abutting lot or parcel. The vehicular access point center
line may be the property line between two lots or parcels of land
or may be a mutually agreed upon land access easement.
Stormwater drainage facilities shall be required which are adequate
to serve the development. Such stormwater drainage facilities shall
be in conformance (as applicable) with the adopted County Development
Plan or elements thereof; all applicable Washington County codes pertaining
to stormwater management; and/or local Comprehensive Plans or adopted
Comprehensive Plan components; or as required by the Town of Barton
based upon recommendation of the Town Engineer. These facilities may
include curbs and gutters, catch basins and inlets, storm sewers,
road ditches, open channels, water retention and detention structures,
basins, and settling basins. All such facilities shall be of adequate
size and grade to hydraulically accommodate the maximum potential
volumes of flow and shall be so designed as to prevent and control
soil erosion and sedimentation and to present no hazards to life or
property. In addition:
A. Stormwater management plan required. A stormwater management plan
shall be prepared by a Wisconsin-registered professional engineer,
which shall include, but not be limited to, the following:
(1)
Existing and proposed topography at two-foot contour intervals
of the proposed development.
(2)
Proposed elevations of all streets, internal sidewalks, drives,
and off-street parking areas.
(3)
Proposed drainage swales.
(4)
Proposed storm sewers, manholes, and inlets.
(5)
Construction site erosion facilities.
(6)
A report and map(s) showing the drainage basin for the entire
area where the development is located, including estimates of the
total acreage in the drainage basin and percentage of the drainage
basin within the proposed development.
(7)
Location of any planned stormwater detention and/or retention
basins and applicable calculations for their sizing and design.
(8)
Calculations relating to the amount of runoff from the site
of the proposed development prior to development and anticipated runoff
following the development of the site.
B. Unpaved street gutters.
(1)
Unpaved street gutters shall be permitted and shall be shaped
and seeded and/or sodded as grassed waterways.
(2)
The developer is encouraged to use natural wetland plant materials
where possible.
(3)
Where the velocity of flow is in excess of four feet per second
on soils having a severe or very severe erosion hazard and in excess
of six feet per second on soils having moderate, slight, or very slight
erosion hazard, the developer shall meander the waterway or install
a paved invert or check dams, flumes, or other energy-dissipating
devices.
C. Drainage facilities.
(1)
These shall, if required by the Town Engineer, include stormwater
detention and/or retention basins, structures, and settling basins
necessary so as to prevent erosion and sedimentation where such facilities
discharge into streams or lakes.
(2)
The design criteria, the size, type, grades, and installation
of all stormwater drains and sewers and other cross-section, invert
and erosion control paving check dams, flumes, or other energy-dissipating
structures and seeding and/or sodding of open channels and unpaved
road ditches proposed to be constructed shall be in accordance with
the plans and standard specifications approved by the Town, including
the Town's "Standards and Specifications for Development," approved
by the Town.
D. Storm sewers.
(1)
When required by the Town, the developer shall assume the cost
of installing all required storm sewers within the proposed development,
except for the added cost of installing storm sewers greater than
those which are necessary to serve tributary drainage areas lying
outside of the proposed development.
(2)
The cost of such larger storm sewers shall be prorated in proportion
to the ratio which the total area of the proposed development is to
the total drainage area to be served by such larger sewer, and the
excess cost shall either be borne by the Town of Barton or assessed
against the total tributary drainage area.
The following Table 500-115 sets forth the minimum required
setbacks for lots or parcels which abut the indicated arterial streets
and highways:
Table 500-115
Required Increased Setbacks Along Arterial Streets and
Highways
|
---|
Name of Arterial Street or Highway
|
Minimum Required Setback from Ultimate Arterial Street
or Highway Right-of-Way Line (a)
(feet)
|
---|
United States highways
|
55
|
State trunk highways
|
55
|
County trunk highways
|
45
|
Locally designated arterial streets and highways
|
45
|
NOTES:
|
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(a)
|
Based upon the ultimate right-of-way width established by the
adopted county jurisdictional highway plan.
|