[codechicago277]

Surprised the article doesn’t mention the McCormick Bridgehouse Museum. It’s something like $5, and you can see the inside of one of those bridges.

https://maps.app.goo.gl/eUXWfkm8LVuYMDsc7

[bs7280]

You can go on bridge lift days during the fall + spring and see inside the engine room while the bridge goes up.