Section 103-170 Ord. 17228; Amending Chapter 25 RE: Arrangement of Streets and Interconnections of Streets and Pedestrian Facilities within and between Subdivisions


Ordinance No.            17228              Council Bill No.           B 90-02A            
            
AN ORDINANCE

amending Chapter 25 of the City Code relating to the arrangement of streets and interconnections of streets and pedestrian facilities within and between subdivisions; and fixing the time when this ordinance shall become effective.

BE IT ORDAINED BY THE COUNCIL OF THE CITY OF COLUMBIA, MISSOURI, AS FOLLOWS:

    SECTION 1.  Chapter 25 of the Code of Ordinances of the City of Columbia, Missouri, is hereby amended as follows:

    Material to be deleted in strikeout; material to be added underlined.

Sec. 25-42. Street improvements generally.

    Streets and curbs and gutters shall be improved to comply with the standards contained herein, and in the city street and storm sewer specifications and design standards, and all design standards and specifications now or hereafter promulgated by the director of public works or adopted by the council, in accordance with the final construction plans required to be approved prior to final plat approval.

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    (2)     Arrangement. All thoroughfares streets shall be located properly with respect to extending existing and platted streets, to special traffic generators, to population densities, and to the pattern of existing and proposed land uses.

        a.     Local streets shall be arranged so as 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 all properties. The use of curvilinear streets, cul-de-sacs, or U-shaped streets shall be encouraged where such use will result in a more desirable layout.  Local streets shall be designed to provide convenient and safe access to all properties and to permit efficient drainage and utility systems.  The use of through streets shall be encouraged to connect adjoining areas and to facilitate the delivery of public and emergency services; however, straight streets more than 800 feet long shall be avoided to discourage speeding.  Individual local residential street segments should serve no more than 50 dwelling units without additional street connections.  Local streets with connections to arterial and collector streets shall be designed to avoid cut-through traffic. Curvilinear streets are encouraged to minimize speeding and the amount of grading.  Cul-de-sacs and loop (U-shaped) streets should be short in length, less prevalent than through streets, and may be especially appropriate to avoid steep slopes, major creeks, floodplains, wetlands and other sensitive environmental areas.  

        b.    Where a subdivision abuts or contains an existing arterial street or highway having limited access, the commission may require the arrangement of residential lots with rear yards abutting the major street, or the provision of frontage roads, or other such treatment as may be necessary in order to provide for adequate protection of residential properties, to afford separation of through and local traffic, and to provide for suitable access to the property involved.

        c.     When a new subdivision adjoins unplatted or undeveloped lands, the new streets shall be carried to the boundaries of such land as appropriate. A temporary turnaround approved by the director of public works shall be installed at this point, except when the terminus of the street is less than two hundred (200) feet from an intersecting right-of-way.  Interconnection of adjacent subdivisions with compatible land uses shall be encouraged.  When a new subdivision adjoins unplatted or undeveloped land, the new streets shall be carried to the boundaries of such land unless vehicular access is unnecessary or inappropriate.  A temporary turnaround approved by the director of public works shall be installed at this point, except when the terminus of the street is less than three hundred (300) feet from an intersecting street right-of-way.  Where street connections to adjoining land are not provided and there is a need for non-vehicular public access to a school, park, trail or other area or use, the city may require the dedication and improvement of a green space access easement or green space trail easement. Whenever such public improvements are required and the landowner conveys fee title in lieu of an easement, the city shall accept ownership and maintenance.

        d.    Private drives may be allowed only to provide internal circulation within a single lot or parcel , except when approved in conjunction with a planned district.

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    SECTION 2.  This ordinance shall be in full force and effect from and after its passage.

    PASSED this 18th day of March, 2002.