(A) Streets. All dedicated streets abutting upon or within subdivided properties or properties developed under an approved PUD shall be constructed, by the subdivider or developer, at its own expense, in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards".
(1) General considerations. 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.
(2) Arrangement.
(a) All streets shall be properly integrated with the existing and proposed system of thoroughfares and dedicated rights of way as established in the city's Comprehensive Plan.
(b) All arterial and major collector streets shall be properly related to special traffic generators, such as businesses, schools, churches, and shopping centers; to population centers; and to the pattern of existing and proposed land uses.
(c) Minor collector and local 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 and safe access to property.
(d) A rigid rectangular gridiron street pattern need not necessarily be adhered to, and the use of curvilinear streets shall be encouraged where they will result in more desirable layout.
(e) Proposed streets shall be extended to the boundary lines of the tract to be subdivided or developed, unless prevented by topography or other physical conditions, or unless in the opinion of the Planning and Zoning Commission, based on the recommendation of the City Engineer, such extension is not necessary or desirable for the coordination of the layout of the subdivision with the existing layout or most advantageous future development of adjacent tracts.
(f) In business subdivisions or PUD's, the streets shall be planned in connection with the grouping of buildings and truck loading and maneuvering areas, so as to minimize conflicts of movement between the various types of traffic.
(3) Access to arterial or major collector streets. Where a subdivision or PUD borders on or includes an existing or proposed arterial or major collector street, the City Council may require that access to such streets be limited by one of the following means:
(a) The subdivision of lots so as to back onto the arterial or major collector street and front onto a parallel minor collector or local street, so that no access is provided from the arterial or major collector street, with landscaped screening provided along the rear lot lines of such lots;
(b) A series of cul-de-sacs, U-shaped streets, or short loops, which enter from and are designed generally at right angles to the arterial or major collector street; or
(c) A frontage street, separated from the arterial or major collector street by a landscaped or grass strip, with suitable access points.
(d) The number of minor collector and local streets entering an arterial or major collector street shall be kept to a minimum.
(4) Street intersections.
(a) Streets shall generally be designed to intersect approximately at right angles, and no more than two streets shall intersect at any one point. No intersection of two new streets shall be designed or constructed at an angle of less than 75 degrees.
(b) Proposed new intersections along one side of an existing street shall, whenever practicable, coincide with any existing intersections on the opposite side of an existing street. No street jogs with center line offsets of less than 150 feet shall be permitted. Where streets intersect arterial or major collector streets, their alignment shall be continuous.
(5) Private streets.
(a) The City Council may, in its discretion, approve the construction, maintenance and use of private streets within subdivisions and PUD's, and may allow access to lots therein by means of such private streets. The following standards shall apply to the construction, maintenance and use of private streets within the city:
1. All private streets shall conform to all design standards as provided under this code for public streets.
2. All private streets shall feature street signs substantially similar in size, lettering and placement as the street signs required for public streets within the city.
(b) A performance guarantee shall be provided to the city by the subdivider or developer for the completion of the private streets and associated improvements, in the same manner as provided in this chapter for the completion of construction of the public improvements in a subdivision or PUD.
(c) The subdivider or developer shall record a declaration of covenants, conditions and restrictions with respect to the subdivision, in a form acceptable to the city's corporation counsel. Such declaration shall include the following:
1. The establishment of an owners' association, which shall have the obligation to maintain the private streets; have the right and obligation to impose assessments against the lots within the subdivision or PUD for the purpose of maintaining the private streets; and have the right and obligation, pursuant to ILCS Ch. 625, Act 5, § 11-209.1, to file a written request to have the city provide parking and traffic enforcement on the private streets.
2. A prohibition against any amendment to such declaration that would affect the requirements under this division, without the written consent of the city.
(B) Sidewalks, pedestrianways and bike paths.
(1) Except for the Elmhurst Countryside Subdivision, as defined herein, sidewalks shall be constructed in all subdivisions and PUD's, by the subdivider or developer, at its own expense, in locations and in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards".
(2) Bike paths may be constructed in a subdivision or PUD only with the City Council's approval thereof as part of the approval of the subdivision plat or PUD plan approval, in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards".
(C) Street lighting. Except for the Elmhurst Countryside Subdivision, as defined herein, street lights shall be installed in all subdivisions and PUD's, by the subdivider or developer, at its own expense, in locations and in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards".
(D) Street trees. Street trees shall be planted in all subdivisions or PUD's, by the subdivider or developer, at its own expense, in locations and in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards".
(E) Street names and signs. Street signs shall be installed in all subdivisions or PUD's, by the subdivider or developer, at its own expense, in locations and in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards". No street name shall be used if it would duplicate or be confused with the names of existing streets, and all street names shall be subject to the approval of the City Council.
(F) Water supply. All subdivisions and PUD's within the city shall have an interconnected water distribution system supplying all lots with water from the city's water system or some other public water system if the city's water system is not reasonably available. A subdivision outside of the city's corporate limits may be supplied with water from individual wells located on each lot, provided that such water supplies are approved by the DuPage County Health Department. The required water distribution system shall be constructed by the subdivider or developer, at its own expense, in accordance with the specifications established in the "City of Oakbrook Terrace Subdivision and Public Improvement Standards".
(G) Sanitary sewer system. All subdivisions and PUD's within the city shall have a system of sanitary sewers, which shall serve each lot and be connected to the appropriate public sanitary sewer system. The subdivider or developer shall construct such system, at its own expense, in accordance with the requirements of the appropriate public sanitary sewer system. A subdivision or PUD outside of the city's corporate limits may have sewage disposal facilities on individual lots; provided that such sewage disposal facilities are approved by the DuPage County Health Department.
(H) Storm water management.
(1) All subdivisions and PUD's within the city shall have a storm water management system, which shall be constructed, at the subdivider's or developer's own expense, in accordance with the requirements of Chapter 152 of this code.
(2) Lots shall be laid out so as to provide drainage away from all buildings, and drainage for each individual lot shall be coordinated with the general storm drainage pattern for the area. Drainage shall be designed to avoid concentration of storm water on adjacent lots.
(I) Variations and waivers. Variations and waivers of the requirements of this section may be granted by the City Council in accordance with § 159.06(D) of this chapter.
(Ord. 08-19, passed 9-9-08)