Bascule implies “seesaw” in French, that is how this bridge operates. With just two 108-horsepower motors, the bridge’s metal and roadway weigh the same as the concrete and metal counterweight. Museum readers can entry the bridge’s equipment room to check out this engineering marvel. In the spring and fall, scheduled https://aqwatheaquariumofwesterna86306.theisblog.com/6563546/the-best-side-of-mccormick-bridgehouse-chicago-river-museum