2 ms·

See also: the canceled 1970s plans for taking the "L" underground: https://en.wikipedia.org/wiki/Chicago_Central_Area_Transit_Plan#Loop_subway https://en.wikipe

• reaperducer 5y ago
  The Red Line and Blue Line of the L both run underground. I once lived in a building that connected to the pedway, so I was able to dress in shorts and a T-shirt in a Chicago winter, navigate underground through the pedway to the Blue Line, then take the Blue Line to O'Hare for a flight to Tampa. The train part was a bit chilly, but it was better than having to drag a winter coat with me on the plane.