The following required improvements shall be installed in accordance
with the standards of this chapter and any additional engineering
standards and specifications which have been adopted by the Village
Board and filed with the Village Clerk-Treasurer. Where standards
and specifications have not been adopted, the improvements shall be
made in accordance with good engineering practices.
The Village shall construct streets and sidewalks pursuant to
approved plans based on the requirements of this Code.
A. Grading. With the submittal of the final plat, the subdivider shall
furnish drawings which indicate the existing and proposed grades of
streets and alleys shown on the plat. Proposed grades will be reviewed
by the Village Engineer for conformance with Village standards and
good engineering practice. Street grades require the approved of the
Village Board after receipt of the Village Engineer's recommendations.
After approval of the street grades, the Village shall grade the full
width of the right-of-way of the streets and alleys proposed to be
dedicated, including the vision clearance triangle on corner lots.
In cases where an existing street right-of-way is made a part of the
plat or abuts the plat, the Village shall grade that portion of the
right-of-way between the existing pavement and the property line.
The bed for the roadways in the street rights-of-way shall be graded
to subgrade elevation. The Village Engineer shall approve all grading
within rights-of-way, and said grading shall extend for a sufficient
distance beyond the right-of-way to insure that the established grade
will be preserved. Where electric and other communications or utilities
facilities are to be installed underground, the utility easements
shall be graded to within six inches of the final grade by the Village,
prior to the installation of such facilities; earth fill piles or
mounds of dirt or construction materials shall not be stored on such
easement areas.
B. Street and sidewalk construction.
(1) After sanitary sewer, storm sewer and water utilities have been installed
by the subdivider, the Village shall construct, and the subdivider
shall dedicate as part of the subdivision, streets and sidewalks,
including those adjacent to platted lots in existing street rights-of-way
abutting the plat. The Village shall surface roadways to the widths
prescribed by the Village Board on recommendation of the Village Engineer.
Construction shall be to Village standard specifications for street
improvements. The subdivider shall pay the cost of curbs and gutters.
(2) The Village Board shall have the option of not requiring the construction
of sidewalks within street rights-of-way in cases where it determines,
after consultation with the Village Engineer, that sidewalks are not
necessary because of low-density land use and low pedestrian volumes
or for access to schools and bus routes or for continuity of existing
sidewalk or bicycle route systems or because of a cul-de-sac or loop
street pattern. Consideration shall also be given to the pattern of
development of adjoining lands and to the possibility of damage to
trees.
C. Completion of street and sidewalk construction.
(1) Prior to any building permits being issued on lands adjacent to streets
and/or sidewalks, all street and sidewalk construction shall first
be approved by the Village Engineer and accepted by the Village Board.
(2) The Village Engineer may issue a waiver of these requirements in
unusual or special circumstances, such as excessively severe weather
conditions, heavy construction temporarily in the area or construction
material shortages (i.e., cement, asphalt). The issuance of a waiver
shall be at the discretion of the Village Engineer and shall be based
upon the written request of the subdivider.
D. Curb and gutter. When required by the Village Board, after the installation
of all utility and stormwater drainage improvements, the subdivider
shall construct concrete curbs and gutters in accordance with plans
and standard specifications approved by the Village Board or its designee.
Wherever possible, provision shall be made at the time of construction
for driveway access curb cuts.
All streets and highways constructed by the subdivider or to
be dedicated to the Village shall fully comply with the following
construction standards:
A. Right-of-way and pavement width. The minimum right-of-way and roadway
width of all proposed streets and alleys shall be as specified as
provided under the design standards provided in Article
VIII of this
chapter.
B. Roadway ditches. Where curb and gutter is not required by the Village
for rural cross-section streets, the minimum ditch slope shall be
0.50%.
C. Roadway base thickness.
(1) Residential streets shall have a minimum roadway base thickness of
eight inches of compacted in-place crushed aggregate base course of
gradation No. 2 in the top layer and gradations No. 1 and No. 2 in
the lower level.
(2) On commercial, arterial or other heavy-use streets, as determined
by the Village Engineer, a base course of eight inches compacted shall
be constructed upon an inspected and approved subgrade, either well-graded
crushed gravel from a state-approved pit with a maximum stone of 1 1/2
inches and no greater than 10% by weight passing a No. 200 sieve or
No. 3 crushed rock approximately six inches in depth and one or more
layers of fine aggregate, either three-fourths-inch crushed gravel,
well-graded with no greater than 10% passing a No. 200 sieve, or three-fourths-inch
traffic-bound crushed rock.
(3) In the case of commercial, arterial or other heavy-use roads, the
Village Board may, in the alternative to the above standards, have
the Village Engineer provide specifications for such roads after researching
the site(s) and conducting a soil analysis.
(4) In any case, the Village Board shall have the sole discretion in
determining the use and construction classification to be adhered
to.
(5) In all cases, the base course shall be compacted to the extent necessary
to produce a condition so that there will be no appreciable displacement
of material laterally and longitudinally under traffic and shall conform
to line, grades and shape shown on the approved plans, profiles and
cross sections.
D. Roadway subbase. Stable and nonorganic subbase material is required.
Unstable and organic material must be subcut, removed and replaced
with a suitable granular or breaker-run material approved by the Village
Engineer.
E. Pavement thickness. Residential streets shall have a minimum of two-and-one-half-inch
thick compacted bituminous concrete pavement, placed in two layers,
a binder course of 1 1/2 inches thick and a surface course of
one inch. On commercial, arterial or other heavy-use streets, there
shall be a minimum of 3 1/2 inches of bituminous concrete pavement,
placed in two layers, a binder course of two inches thick and a surface
course of 1 1/2 inches thick. In the case of commercial, arterial
or other heavy-use roads, the Village Board may, in the alternative
to the above standards, have the Village Engineer provide specifications
for paving such roads after researching the site(s) and conducting
a soil analysis. In any case, the Village Board shall have the sole
discretion in determining the use and construction classification
to be adhered to.
F. Roadway culverts and bridges. Roadway culverts and bridges shall
be constructed as directed by the Village Engineer and sized utilizing
the methods listed in Chapter 13, Drainage, of the Facilities Development
Manual of the Wisconsin Department of Transportation. All roadway
culverts shall be provided with concrete or metal apron endwalls.
G. Driveway culverts. Driveway culverts shall be sized by the Village
Engineer (if appropriate). The culverts shall be placed in the ditch
line at elevations that will assure proper drainage, be provided with
concrete, metal or landscape timber endwalls, and shall comply with
all Village ordinances.
There shall be provided a sanitary sewerage system in conformity
with the master plan of sewers as approved by the Village Board and/or
sewerage district. The subdivider shall install adequate sanitary
sewer facilities and connect them to sewer mains subject to specifications
and inspection of the Village Engineer. The subdivider shall pay all
the costs of all sanitary sewer work, including the bringing of the
sanitary sewer from where it exists to the subdivision in question
as well as providing all sanitary sewer work within the subdivision.
The cost of providing and installing sewer pipe of sizes larger or
at a greater depth than required to serve the area shall be borne
by the Village, as agreed upon between the landowner and the Village
Board prior to approval of the preliminary plat or certified survey
map, pursuant to this chapter. The size, type and installation of
all sanitary sewers proposed to be constructed shall be in accordance
with plans and standard specifications approved by the Village. The
subdivider shall be responsible for the cost of sewer and water utility
improvements, including lift stations and grinder pumps; the Village
shall be responsible for the cost of installing manholes and hydrants.
There shall be provided a water supply system in conformity
with the master plan of the water system as approved by the Village
Board. The subdivider shall construct water mains in such a manner
as to make adequate water service available to each lot within the
subdivision. If municipal water service is not available, the subdivider
shall make provision for adequate private water systems as specified
in applicable ordinances. The Village may require the installation
of water laterals to the street lot line. The size, type and installation
of all public water mains proposed to be constructed shall be in accordance
with plans and standard specifications approved by the Village. The
Village shall be responsible for the cost of hydrants and manholes.
Pursuant to §
445-33, the subdivider shall provide
stormwater drainage facilities, which may include curb and gutter,
catch basins and inlets, storm sewers, road ditches and open channels,
as may be required. All such facilities are to be of adequate size
and grade to hydraulically accommodate the twenty-five-year storm.
Storm drainage facilities shall be so designed as to present no hazard
to life or property, and the size, type and installation of all stormwater
drains and sewers proposed to be constructed shall be in accordance
with the plans and specifications approved by the Village Engineer.
The subdivider shall pay all costs of all storm sewer work, except
that the subdivider shall not be required to pay for any storm sewers
that are required to bring the storm sewers to the subdivision, nor
shall they be required to install any storm sewers that are more than
18 inches in diameter.
Improvements within a subdivision which have been completed
prior to application for approval of the final plat or execution of
the contract for installation of the required improvements shall be
accepted as equivalent improvements in compliance with the requirements
only if the Village Engineer shall certify that he is satisfied that
the existing improvements conform to applicable standards.