Sinking Streets
In 1905, Joseph M. Patterson, Commissioner of Public Works, asked three
engineers, John M. Ewen, Louis E. Ritter and E.C. Shankland, to prepare
reports on the possible settling of streets in Chicago due to the
construction of the tunnels.
The engineers describe many cases of settlement. At the Marshall Field wholesale store, for example, they discovered that "the sinking at the intersection of State street and Jackson boulevard was caused when the turnout curves at the intersection of the tunnels were constructed."
Page from Report
Chicago (Ill.). Dept. of Public Works. Engineering Commission, Report to the Commissioner of Public Works, Chicago, on the Tunnels of the Illinois Tunnel Company by the Engineering Commission, Appointed July 6, 1905. Chicago: Press of Stevens, Maloney & Co., 1905. Crerar microfm TF850.C4 1905
