A. Design And Location: Streets shall be designed and located, in relation to existing and planned streets, to topographical conditions and natural terrain features such as streams and existing tree growth, to public convenience and safety, and in appropriate relation to the proposed uses of land to be served by such streets.
B. Arrangement:
1. All streets shall be properly integrated with the existing and proposed systems of thoroughfares and dedicated rights of way as established on the official map of the village.
2. All thoroughfares shall be properly related to special traffic generators such as industries, business districts, schools, churches, and shopping centers; to population densities; and to the pattern of existing and proposed land uses.
3. Streets shall be laid out to conform as much as possible to the topography, to discourage use by through traffic, to permit efficient drainage and utility systems, and to require the minimum number of streets necessary to provide convenient, safe access to property.
4. The rigid rectangular gridiron street pattern need not necessarily be adhered to, and the use of curvilinear streets, cul-de-sacs, or V-shaped streets shall be encouraged where such use will result in a more desirable layout.
5. Proposed streets shall be extended to the boundary lines of the tract to be subdivided, unless, by topography or other physical conditions, or unless, in the opinion of the president and board of trustees, such extension is not necessary or desirable for the coordination of the layout of the subdivision with the existing layout or the most advantageous future development of adjacent tracts.
6. The arrangement of streets in new subdivisions shall make provisions for the direct continuation of the principal existing streets in adjoining subdivisions (or their proper projection where adjoining property is not subdivided) insofar as they may be necessary for public requirements. In general, such streets shall be a width at least as great as the existing streets. The street and alley arrangement must also be such as to provide opportunity for access and use by adjoining property owners. Wherever a street is stub ended so that it will not at that end open into another street, an adequate turnaround shall be provided.
7. In business and industrial developments, the street and other accessways shall be planned in connection with the grouping of buildings, location of rail facilities, and the provision of alleys, truck loading and maneuvering areas, fire protection and walks and parking areas so as to minimize conflict of movement between the various types of traffic, including pedestrian.
C. Railroads And Highways: Railroad rights of way and limited access highways, where so located as to affect the subdivision of adjoining lands, shall be treated as follows:
1. In residential districts, a buffer strip at least twenty five feet (25') in depth, in addition to the normal depth of the lot required in the district, shall be provided adjacent to the railroad right of way or limited access highway. This strip shall be part of the platted lots and shall be designated on the plat: "This strip is reserved for the planting of trees and shrubs by the owner. The placement of structures hereon is prohibited."
2. In districts zoned for business, commercial or industrial uses, the nearest street extending parallel or approximately parallel to the railroad shall, wherever practicable, be at a sufficient distance therefrom to ensure suitable depth for commercial or industrial sites.
3. Streets parallel to the railroad when intersecting a street which crosses the railroad at grade shall, to the extent practicable, be at a distance of at least one hundred fifty feet (150') from the railroad right of way. Such distance shall be determined with due consideration of the minimum distance required for future separation of grades by means of appropriate approach gradients.
D. Access To Major Streets: Where a subdivision borders on or contains an existing or proposed major street, the village board may require that access to such streets be limited. The number of residential streets entering a major street shall be kept to a minimum.
E. Residential Streets:
1. All improvements shall conform to the best engineering standards. Due consideration shall be given throughout to the appearance of the subdivision and the various features thereof within its own boundaries, and also in its environment in the village. (Ord., 12-27-2007)
2. The following minimum standards shall apply to the design of residential streets:
Urban |
Urban | |
Right of way | 66 feet |
Pavement width | 36 feet |
Type of curb | 1 |
Sidewalk width | 5 feet |
Sidewalk distance from right of way | within 1 foot |
Minimum centerline radius | 250 feet |
Design speed (mph) | 30 |
Notes:
1. Combination concrete curb and gutter, IDOT standard M-6.18.
(Ord., 12-27-2007; amd. 2009 Code)
F. Grades Of Streets: The grade of major streets shall not exceed five percent (5%) unless necessitated by exceptional topography and approved by the village board. The grade of all other streets shall not exceed six percent (6%). The minimum grade of all streets shall be one percent (1%). Pedestrianways or crosswalks shall not exceed twelve percent (12%) grade unless steps of an approved design are to be constructed. Curb ramps at intersections shall conform to IDOT standard 2356-2, "Curb Ramps Accessible To The Disabled".
G. Tangents: A tangent at least one hundred feet (100') in length shall be introduced between reverse curves on major arterials and collector streets.
H. Cul-De-Sacs, Dead End Streets, Stub Streets:
1. A cul-de-sac shall not be longer than six hundred feet (600') in residential subdivisions, as measured from the center of the intersection to the center point of the cul-de- sac.
2. The diameter of a cul-de-sac turnaround (measured at the outside right of way) shall not be less than one hundred twenty feet (120') with a pavement diameter of not less than one hundred feet (100').
3. Dead end streets or stub streets shall not be permitted. Temporary dead end streets or stub streets due to staged development may be permitted upon approval by the village, and if approved, shall be provided with a sixty foot (60') hammerhead turnaround design, or other acceptable design approved by the village. The temporary hammerhead turnaround shall be installed by the developer at his/her own expense.
I. Half Streets: Street systems in new subdivisions shall be laid out so as to eliminate or avoid half streets. Where a new subdivision abuts an existing street of inadequate right of way width, additional right of way width may be required to be dedicated by the developer to meet the requirements of this section.
J. Street Intersections:
1. Streets shall be laid out so as to intersect as nearly as possible at right angles. A proposed intersection of two (2) new streets at an angle of less than seventy degrees (70°) shall not be acceptable. Not more than two (2) streets shall intersect at any one point unless specifically approved by the village board.
2. Proposed new intersections along one side of an existing street shall, wherever practicable, coincide with an existing intersection on the opposite side of such street. Street jogs with centerline offsets of less than one hundred twenty five feet (125') shall not be permitted, except where the intersected street has separated dual drives without median breaks at either intersection. Where streets intersect major streets, their alignment shall be continuous.
3. Minimum curb radius shall be twenty five feet (25'). In any case, where more dedication is deemed necessary to provide safe sight distance or for traffic channelization, the village board may specify a greater cutoff than the normal cited above. Alley intersections and abrupt changes in alignment within a block shall have the corners cut off in accordance with standard engineering practices, to permit safe vehicular movement.
4. Where the grade of any street at the approach of an intersection exceeds five percent (5%), a leveling area shall be provided having not greater than four percent (4%) grade a distance of twenty five feet (25'), measured from the nearest right of way line of intersecting street.
5. Intersections shall be designed with a flat grade wherever practical. In no case shall the vertical alignment within the intersection area exceed four percent (4%).
6. Where any street intersection will involve earth banks or existing vegetation inside any lot corner that would create a traffic hazard by limiting visibility, the developer shall cut such ground and/or vegetation (including trees) in connection with the grading of the public right of way to the extent deemed necessary to provide an adequate sight distance.
K. Names Of Streets 1 : All street names are to be approved by the village board and the U.S. post office prior to final map approval. No street names shall be used which will duplicate or be confused with the names of existing streets. New streets which are extensions of or obviously in alignment with existing streets shall bear the name of the existing streets.
L. Paving:
1. Designated surface treatments shall meet the specifications of the Illinois department of transportation. All construction methods and materials shall conform to the applicable sections of the "Standard Specifications For Road And Bridge Construction In Illinois", latest edition.
2. Proper grade and detailed standards for construction shall be approved by the village engineer. Frost free, bank run sand and gravel, or comparable granular material, shall be used for a minimum of one year, or such greater time as may be specified by the village engineer before an impervious surface is applied over a road bed.
URBAN CROSS SECTION
Item | Minimum Thickness | Comments |
Compacted aggregate base course, type B | 10 inches | In 5 inch lifts (maximum), using 5 inches of new CA-2 in the bottom half and 5 inches of new CA-10 in the top half per the "Standard Specifications For Road And Bridge Construction", Illinois department of transportation (IDOT), latest edition, or current state of Illinois and village requirements. |
Bituminous surface course | 3 inches | The binder course shall be class I, bituminous concrete, and bituminous matter AC 100-120, type II, mix B shall be used for the surface course, including a separate prime coat applied to the aggregate surface, per the "Standard Specifications For Road And Bridge Construction", Illinois department of transportation (IDOT), latest edition, or current state of Illinois and village requirements. |
M. Alleys: Alleys shall not be required in residential areas.
N. Sidewalks:
1. Specifications: Concrete sidewalks of a width not less than five feet four inches (5'4") thick shall be installed on both sides of all streets and thoroughfares except in subdivisions with lots of not less than twenty thousand (20,000) square feet in area, where the installation of sidewalks or minor streets may be waived. Where sidewalks cross drives, the sidewalks shall be six inches (6") thick reinforced.
2. Perimeter Sidewalks And/Or Bike Paths: The developer shall install and pay for perimeter sidewalks and/or bike paths along all public routes as part of the required public improvements. The location, design and installation of perimeter sidewalks are to be approved by the village. Perimeter sidewalks shall be either constructed of concrete five feet (5') wide, not less than four and one-half inches (41/2") thick, or of two inches (2") of bitumin over a minimum of eight inches (8") of aggregate and ten feet (10') wide. A cash equivalent, subject to acceptability and approval of the village, may be substituted in lieu of the perimeter sidewalks. (Ord., 12-27-2007)
Notes
| 1 | 1. See also section 6-1-2 of this code. |
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