Re: Weird Manhole Cover
Date: November 02, 2011 11:49PM
Can't say for certain, but I'd guess that at least some of the route might have been built in tandem as much as possible and share some rights-of-way. Some of the early bids for construction mention excavation and tunneling, but the project was on a very tight budget. However, the tubes extended beyond the range of the tunnel system so I assume there had to be digging for the sole purpose of tube installation. The tunnels and the tubes went into service around the same time, 1904-'06.
What's interesting is that, for a short time, the Illinois Tunnel Company ran a mail delivery service as well, which could handle a lot more mail than the tubes. In 1907, the tunnels took on a portion of the CPPT route when the tubes that ran under the river were damaged.
Edited 1 time(s). Last edit at 11/02/2011 11:52PM by WayOutWardell.