Control horizontally and vertically adjustable bridges.
What does a Slip Bridge Operator do?
Controls horizontally and vertically adjustable bridge, between wharf and scow lashed to wharf, to allow railroad cars to be driven from land to scow: Moves bridge controls to extend and align bridge tracks with tracks on barge. Controls vertical movement of bridge in accordance with sinking of scow during loading. May lash scow to wharf with steel cable drawn taut by winch or windlass when tugboat brings scow into position.