 The bridgemaster at the control console commands the raising of the central section, and the massive alignment grooves, pulleys, cables, and counterweights are all detailed in their steady synchronized operation until the bridge's maximum height of 38 meters is reached.Sailing and steam ships then make their way under the raised bridge, while the steam train waits, puffing.The bridge descends, the counterweights rise, and the train continues on its way.