In order to clarify this article, the following
definitions apply:
HIGHWAY RIGHT-OF-WAY
A general term denoting land, property or interest therein,
usually in a strip, acquired for or devoted to a highway.
ROADBED
The graded portion of a highway within top and side slopes,
prepared as a foundation for the pavement structure and shoulders.
ROADWAY
Any area within the right-of-way where any part of the actual
road construction will take place.
SUBGRADE
The top surface of a roadbed upon which the pavement structure
and shoulders are constructed.
SURFACE COURSE
One or more layers of a pavement structure designed to accommodate
the traffic load, the top layer of which resists skidding, traffic
abrasion and the disintegrating effects of climate.
The following are the standards set up by the
Board of Supervisors for the construction of the proposed highway
in compliance with good practice, general construction and safety.
A. Highway right-of-way.
(1) The minimum width for any highway right-of-way shall
not be less than 66 feet.
(2) The minimum width for a cul-de-sac shall be 45 feet.
(3) At all bend points or curves in the horizontal alignment
where the tangent deflection angle is 45° or larger, the tangent
shall be connected with a curve having a minimum length of 300 feet
as measured along the center line. This shall not apply to road intersections.
(4) The intersection of the proposed highway with another
highway or Town road shall be at 90° (i.e., the center line of
the proposed highway must be perpendicular to the center line of the
existing highway at their intersection).
B. Roadway.
(1) Clearing and grubbing of all trees, stumps and brush
shall be completed to a minimum width of 44 feet. The forty-four-foot
clearing width is to be centered on the roadbed center line. In cut
or fill sections which extend beyond the forty-four-foot minimum clearing
width, the roadway is to be cleared five feet beyond the cut or fill
slope intercept.
(2) No trees, stumps, brush, or large rocks shall be disposed
of within the highway right-of-way.
(3) Topsoil salvaged from the roadbed shall be spread
to a minimum depth of two inches in the side slope areas of cut or
fill sections that have had the natural cover removed.
(4) All disturbed areas outside the edge of the gravel
shoulders shall be seeded and mulched to promote a growth of rooted
grasses to reduce the possibility of erosion. Seeding shall be Seed
Mixture No. 20, as specified in Section 630.2.1.5.1.1.1 of the 1989
Wisconsin Department of Transportation specifications for road and
bridge construction. The sowing rate shall be three pounds per 1,000
square feet. Mulching material shall be either straw or hay which
is substantially free of noxious weed seeds. The mulching material
shall be placed to a minimum depth of one inch.
(5) The applicant is responsible for erosion control on
the proposed highway and is also responsible for following any Department
of Natural Resources regulations and guidelines which may apply to
this project. If any permits are required the applicant is required
to obtain them.
C. Roadbed.
(1) All marsh, swamp, muck and peat material shall be
removed from the area of the proposed roadway to ensure a stable foundation
for the roadway fill.
(2) All excavated, organic materials shall be disposed
of either by placing in six-inch maximum depth layers on the side
slopes of all cut or fill sections or by disposing off the highway
right-of-way.
(3) The roadbed fill shall be free of large rocks, muck,
peat, and other organic material.
(4) Fill material shall consist of sand or gravel and
shall be placed in six-inch maximum lifts and compacted to prevent
differential settlement.
(5) Drainage structures of proper size shall be installed
to ensure proper drainage and to prevent the flooding of the roadbed
or adjacent property.
(6) The maximum grade on the proposed Town road shall
be 8.0%.
D. Surface course.
(1) Crushed aggregate for the base course shall be placed
to a minimum compacted depth of eight inches and shall conform to
the requirements of Gradation No. 2 of Section 304 of the 1989 Wisconsin
Department of Transportation specifications for road and bridge construction.
The crushed aggregate base course shall be placed to a minimum width
of 24 feet. Culs-de-sac shall have a gravel base with a radius of
37 feet.
[Amended 8-13-2002]
(2) Bituminous pavement shall be placed to a compacted
depth of three inches and shall conform to Gradation No. 3 of Section
401.2.5 of the 1989 standard specifications or Gradation No. 3 or
4 of the 1981 standard specifications. All work done under the heading
of bituminous pavement shall be done in accordance with Sections 405
and 406 of the 1989 standard specifications. The bituminous material
used in the hot mix asphalt shall be a Type A.C. with a penetration
designation of 120/150. The minimum paving width shall be 20 feet
and the culs-de-sac shall have a minimum paved radius of 35 feet.
[Amended 8-13-2002]
(3) Bituminous pavement shall not be constructed between
October 15 and May 15 without the prior approval of the Town Board
or its engineering representative.
(4) The roadway shall conform to the attached typical
cross section.
(5) Crushed aggregate base course shoulders shall be placed
with a machine specifically designed for shouldering; the shoulders
shall be constructed two feet wide along the edge of the pavement
with Gradation No. 2 or Gradation No. 3 crushed aggregate base course
according to Section 304 of the standard specifications. The shoulders
are to be constructed according to the attached typical cross section.
After the shoulders are placed it is required that they be compacted
with a rubber tire roller.
E. Approval of phases; inspections; engineering costs.
(1) Each phase of the road construction (rough grading,
crushed aggregate base course and bituminous paving) must be approved
by the Town Board or its engineering representative prior to the commencement
of the next phase of construction.
(2) Upon completion of the roadway and prior to acceptance
into the Town road system, the Board of Supervisors shall make a final
inspection of the highway. If during the inspection deficiencies are
noted in the construction, such deficiencies must be corrected and
approved prior to the road being accepted. When final acceptance is
made, the owner or owners shall deed to the Town the minimum sixty-six-foot
right-of-way. The Town Board may request additional right-of-way if
it is needed for the future maintenance of the roadway or in large
cut or fill sections where more right-of-way would be needed to construct
the proper side slopes.
(3) Should it become necessary for the Town Board of Supervisors
to engage the services of an engineering firm to verify compliance
with the road specifications hereinbefore set forth, the applicant
will be responsible for the cost of those services, and payment will
be due prior to the Board of Supervisors giving approval to the new
road involved.