The subdivider shall construct streets, roads and alleys as
outlined on the approved plans based on the requirements of this chapter:
A. Street construction standards. The design and construction of all roads, streets and alleys in the Town shall fully comply with the requirements and specifications of §§
250-30 and
250-31.
B. Grading.
(1) With the submittal of the final plat, the subdivider shall furnish
drawings which indicate the existing and proposed grades of roads,
streets and alleys shown on the plat.
(2) Proposed grades will be reviewed by the Town Engineer for conformance
with Town standards and good engineering practice. Street grades require
the approval of the Town Board after receipt of the Town Engineer's
recommendations.
(3) After approval of the street grades, the subdivider 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.
(4) In cases where an existing street right-of-way is made a part of
the plat or abuts the plat, the subdivider shall grade that portion
of the right-of-way between the existing pavement and the property
line.
(5) The bed for the roadways in the street rights-of-way shall be graded
to subgrade elevation.
(6) The Town Engineer shall approve all grading within rights-of-way,
and said grading shall extend for a sufficient distance beyond the
right-of-way to ensure that the established grade will be preserved.
(7) 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 subdivider 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.
C. Street construction. After sanitary sewer, storm sewer, water, and other necessary utilities have been installed, where required by the Town, the subdivider shall construct and dedicate, as part of the subdivision, streets and roads. The subdivider shall surface roadways to the widths prescribed by §§
250-30 and
250-31. Construction shall be to Town standard specifications for street improvements.
D. Completion of street and road construction.
(1) Prior to any building permits being issued on lands adjacent to streets,
all street construction shall be completed by the subdivider, approved
by the Town Engineer and accepted by the Town Board.
(2) The Town Board may issue a waiver of these requirements in unusual
or special circumstances such as excessively severe weather conditions,
heavy construction temporarily in area or construction material shortages
(i.e., cement, asphalt). The issuance of a waiver shall be at the
discretion of the Town Board.
(3) The subdivider requesting a waiver shall do so in writing, presenting
such information and documentation as required by the Town Board.
The waiver shall be in written form and shall detail which improvement
requirements are temporarily waived and for what period of time.
After the installation of all required utility and stormwater
drainage improvements, the subdivider, when required by the Town Board
where determined to be necessary by the Town Engineer, shall construct
concrete curbs and gutters in accordance with plans and standard specifications
approved by the Town Board or its designee. Wherever possible, provision
shall be made at the time of construction for driveway access curb
cuts.
Pursuant to §
250-34, 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. Storm sewers are to be of adequate size and grade to hydraulically accommodate the ten-year storm; culverts shall be designed to accommodate the ten-year storm and shall be sized so that the twenty-five-year-frequency storms do not cause flooding of the adjacent roadway. Upon the approval of the Town Engineer, stormwater swales and ditches may be sized for from twenty-five-year- to 100-year-frequency storms, depending upon the estimated amount of damage that would be incurred by adjacent properties if flooding did occur. Storm drainage facilities shall be so designed as to minimize hazards 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 Town Board, upon the recommendation of the Town Engineer. Storm sewers oversized to handle runoff from off-site properties will be installed by the subdivider; however, the cost of oversizing above a twenty-four-inch-diameter storm sewer shall be paid by other users connecting to the system.
The subdivider shall install at the intersections of all streets
proposed to be dedicated a street name sign of a design and installation
specified by the Town Engineer.
Pursuant to the county's or Town's Construction Site
Erosion Control Ordinance, the subdivider shall cause all gradings,
excavations, open cuts, side slopes, and other land surface disturbances
to be mulched, seeded, sodded or otherwise protected so that erosion,
siltation, sedimentation and washing are prevented. The subdivider
shall submit an erosion control plan that specifies measures that
will be taken to assure the minimization of erosion problems.