The Official Map and accompanying text states
the minimum requirements of the Village of Williamsville for schools,
parks, playgrounds, public service facilities, public ways and the
kind and quality of materials for public service facilities, and the
standards required for drainage and sanitary sewers and collection
and treatment of sewage.
The minimum requirements for thoroughfares are
as follows:
A. Minimum right-of-way widths. Right-of-way widths of
interstate and limited access routes and parkways shall be in accord
with federal and state standards.
|
Type of Street
|
Minimum Width
(feet)
|
---|
|
Major thoroughfares
|
120 (or less as shown on the Official Map)
|
|
Collector streets
|
60
|
|
Minor streets
|
50
|
|
Dead-end streets (culs-de-sac)
|
50
|
|
Marginal access streets
|
50
|
|
Alleys
|
20
|
|
Pedestrianways
|
30
|
B. Minimum pavement widths. Pavement in cul-de-sac turnabouts
in all developments shall have a minimum diameter of 80 feet with
a permanent-type edge.
|
Type of Street
|
Minimum Width (Back to Back of Curbs)
(feet)
|
---|
|
Major thoroughfares
|
In accordance with federal, state, county or
local plans
|
|
Collector streets
|
40
|
|
Minor streets
|
34
|
|
Dead- end streets (culs-de-sac)
|
34
|
|
Marginal access street
|
28
|
|
Half street
|
1/2 the width of the proposed street but not
less than 14
|
|
Alleys
|
20 in industrial and business areas
|
C. Roadway surfacing. Pavements shall be installed in
accordance with the following standards:
(1) Base course.
(a)
A gravel and crushed stone base course shall
have a compacted depth of six inches in residential areas and a compacted
depth of 12 inches in manufacturing and business areas. The construction
work shall be carried out in accordance with Section 29 of the Standard
Specifications for Road and Bridge Construction prepared by the State
of Illinois, Department of Public Works and Buildings, Division of
Highways, adopted January 2, 1958. The material used in the top three-inch
course of this base shall be either Grades 7, 8, 9, or 11 as specified
in Article 118.5(a) of said specifications. The material in the lower
portion of the base may be any of the above-named grades or it may
be a processed aggregate meeting the following graduation requirements:
[1] Passing a three-inch sieve: 100%.
[2] Passing a one-inch sieve: 60% to 90%.
[3] Passing a one-half-inch sieve 40% to 80%.
[4] Passing a No. 8 sieve: 20% to 45%.
[5] Passing a No. 200 sieve: 5% to 15%.
(b)
If crushed gravel is used, the clay content
shall be not less than 5% nor more than 10%. Pit-run gravel will not
be satisfactory for use in the base construction.
(2) Surfacing. When the above base is in place and accepted
by the Superintendent of County Highways and the Chairman of the Streets
and Alleys Committee of the Williamsville Board of Trustees, but not
until the same has been subjected to traffic, it shall be covered
with an A-3 type surface or better, and with construction to be in
accordance with Section 39 of the State Standard Specifications for
Road and Bridge Construction, dated January 2, 1958.
(3) Notification of start of construction. The County
Superintendent of Highways, the Williams Township Highway Commissioner
and the Chairman of the Streets and Alleys Committee of the Williamsville
Board of Trustees shall be notified 48 hours in advance of the starting
date of any work on the street. The three aforementioned persons shall
be furnished with a list of sources of materials used on the job in
time to check the work. Materials to be used on the job may be subject
to inspection at the source or at the street construction site. Construction
work may be inspected at the time of construction and also following
construction. Random core borings may be made at the discretion of
the County Superintendent of Highways and the Chairman of the Streets
and Alleys Committee of the Williamsville Board of Trustees to assure
that construction of the pavement has been carried out in compliance
with the rules and regulations noted above.
D. Curbs, gutters, sidewalks and storm systems.
(1) Curbs and gutters. Curbs and gutters, where constructed,
shall be of portland cement concrete. They shall be not less than
18 inches in width and not less than six inches in thick where the
gutter abuts the street pavement. All curb corners shall have a minimum
radius of 16 feet.
(2) Sidewalks. Sidewalks, where required, shall be of
portland cement concrete and shall be at least four feet wide and
four inches thick. Sidewalks shall be installed in accordance with
standards and specifications approved by the Plan Commission.
(3) Storm sewer system. Stormwater inlets or outlets and
culverts shall be provided within the roadway improvements at points,
so as to facilitate adequate stormwater runoff from the street pavement.
The minimum design and specifications for such facility shall be obtained
from the Village Engineer.
Any person who shall violate any of the provisions
of this Official Map chapter shall be deemed guilty of a misdemeanor
and, upon conviction thereof, shall be fined in any sum not to exceed
$750. Each day that a violation of this Official Map chapter continues
shall constitute a separate and distinct offense and shall be punishable
as such.