Deep Tunnel Role The freight tunnels are about 40 feet below the surface.

A shaft connects this tunnel to the flooded freight tunnels.

The little car lurched forward, climbed a ramp, threaded through a freight tunnel, and mounted an elevator.

The long-planned cross-harbor freight tunnel would solve the problem nicely.

"Closed freight tunnel that used to connect to the West Side rail yard The moles break through the walls to get into some of those tunnels."

The Chicago funds are to aid small businesses that suffered when the Chicago River flooded a system of old freight tunnels several weeks ago.

A month before, the Chicago River had broken through a freight tunnel and flooded downtown basements with muck.

The flooding was the result of a breach the size of an automobile in the roof of a freight tunnel underneath the Chicago River.

And it is not known how much damage the water caused to foundations, utility lines and the old freight tunnels themselves.

First proposed in 1920, the freight tunnel has been mapped.