calumet412:

Cross section view of the substructure below the Marshall Field store on State Street, 1900, Chicago.
Important notes are the Caisson wells, which are the standard for most large scale architecture in Chicago and the “subway” (referenced in several past posts), a series of tunnels beneath the Loop formerly used for transportation of cargo, mail, etc…The tunnels were Chicago’s answer to New York’s subway system, meant to alleviate commercial traffic on surface streets.

calumet412:

Cross section view of the substructure below the Marshall Field store on State Street, 1900, Chicago.

Important notes are the Caisson wells, which are the standard for most large scale architecture in Chicago and the “subway” (referenced in several past posts), a series of tunnels beneath the Loop formerly used for transportation of cargo, mail, etc…The tunnels were Chicago’s answer to New York’s subway system, meant to alleviate commercial traffic on surface streets.

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    Is the “subway” a separate system from the underground portion of the L in the Loop? When it was open, you used to be...
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