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In the Chicago area, the limestone underwent a further transformation into dolostone. Dolostone is the bedrock beneath Chicago's dense layer of clay and glacial debris. The world's second largest aggregate quarry, Thornton Quarry, exists just south of the city limits in the suburb of Thornton. The dolostone bedrock rises close to the ground ...
The double-decked portion of Wabash Avenue north of the Chicago River was built in 1930, in conjunction with the single-level Wabash Avenue Bridge. On January 3, 2005, the upper and lower levels were closed at Kinzie Street for reconstruction (in conjunction with the Trump Tower Chicago development) but have since been reopened.
Aerial view of Phase II of the McCook Reservoir under construction in 2023. The Tunnel and Reservoir Plan (abbreviated TARP and more commonly known as the Deep Tunnel Project or the Chicago Deep Tunnel) is a large civil engineering project that aims to reduce flooding in the metropolitan Chicago area, and to reduce the harmful effects of flushing raw sewage into Lake Michigan by diverting ...
English: Map of Chicago community areas. Data compiled using the Chicago Community Areas List numbered 1-77 and 'Sides' descriptions. Date: 12 November 2012, 14:32:41:
A map of the 77 community areas, broken down by purported regions. While the areas have official use and definition, the color groupings are unofficial, and such "regions" may be defined differently, grouped differently, or not be used at all. The city of Chicago is divided into 77 community areas for statistical and planning purposes.
OpenStreetMap map of the Pedway Sign of the Chicago Pedway. An underground Pedway tunnel Inside a Pedway bridge between the Ogilvie Transportation Center and 2 North Riverside Plaza The Chicago Pedway is a network of tunnels , ground-level concourses and bridges in Chicago, Illinois connecting skyscrapers, retail stores, hotels, and train ...
The new Chicago Sanitary and Ship Canal, linking the south branch of the Chicago River to the Des Plaines River at Lockport, and in advance of an application by the Missouri Attorney General for an injunction against the opening, opened on January 2, 1900. However, it was not until January 17 that the complete flow of the water was released.
When Chicago was founded in 1837, most of the early building was around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. [104] The overall grade of the city's central, built-up areas is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight ...