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Originally Posted by Investing In Chicago
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Also, were the massive concrete structures always part of the plan? Why doesn't the CTA use steel support beams, like the rest of the system? These hulking concrete structures are terrible.
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Concrete is generally quieter, I think that's the main reason: it's mass just dampens vibrations better than steel. I don't think they'll feel as "hulking" once built. Even if they used steel, I don't think it would necessarily be some light, airy thing once completed.
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