Chicago Has Drilled 109 Miles of Mammoth Tunnels Underneath Itself [Chicago]

Chicago's mechanized subterranean restructuring project, TARP (Tunnel And Reservoir Plan), has bored out a massive complex of manmade caverns. The goal? To prevent flooding and sewage overflow seeping into Lake Michigan. The effect? As you can see here, truly enormous. [BLDGBLOG] More »






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