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Sunday 18 September 2011

City planning of Chicago


Chicago has four main sections: Downtown (which contains the Loop), the North Side, the South Side, and the West Side. The three sides of the city are represented on the Flag of Chicago by three horizontal white strips. These sections can further be informally subdivided or grouped, for example as shown on the map (right). Further sectional references are the Northwest side and the Southwest side. In the late 1920s, sociologists at the University of Chicago subdivided the city into 77 distinct community areas, which can further be subdivided into over 200 neighborhoods.
The central commercial area often is portrayed, as in the map at right, to include parts of Near North Side and Near South Side, as well as the Loop. The North Side is the most densely populated residential section of the city and many high-rises are located on this side of the city along the lakefront. The South Side is the largest section of the city, encompassing roughly 60% of the city's land area. The South Side contains the University of Chicago and most of the facilities of the Port of Chicago.
Chicago's streets were laid out in a street grid that grew from the city's original townsite plat. Streets following the Public Land Survey System section lines later became arterial streets in outlying sections. As new additions to the city were platted, city ordinance required them to be laid out with eight streets to the mile in one direction and 16 in the other direction. The grid's regularity would provide an efficient means to develop new real estate property. A scattering of diagonal streets, many of them originally Indian trails, also cross the city. Many additional diagonal streets were recommended in the Plan of Chicago, but only the extension of Ogden Avenue was ever constructed.



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