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Chicago dug 60 miles of freight tunnels under the Loop in 1899 and forgot them; in 1992, a damaged wall let the river in, and losses topped $1 billion

Under downtown Chicago lies a maze of old freight tunnels. Most people walking above them probably have no idea. In an essay for MAS Context, Chicago transit author Bruce G. Moffat writes that work on ...

Chicago dug 60 miles of freight tunnels under the Loop in 1899 and forgot them; in 1992, a damaged wall let the river in, and losses topped $1 billion

Explore the hidden freight tunnels of Chicago that collapsed in 1992, leading to a devastating flood with losses exceeding a ...