Chicago Tunnel Company

The Chicago Tunnel Company was the builder and operator of a 2 ft (610 mm) narrow-gauge railway freight tunnel network under downtown Chicago, Illinois. This was regulated by the Interstate Commerce Commission as an interurban even though it operated entirely under central Chicago, did not carry passengers, and was entirely underground. It inspired the construction of the London Post Office Railway.

Chicago Tunnel Company
Under the streets of Chicago, pre-1906
Overview
HeadquartersChicago
LocaleIllinois
Dates of operation19061959
Successorabandoned
Technical
Track gauge2 ft (610 mm)
Length60 miles (97 km)
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