Welcome to Taipei Bridge, known in Chinese as 台北大橋, and informally just Taipei Qiao. Here a motor-vehicle bridge carries you across the Tamsui River, linking Taipei with Sanchong District in New Taipei City. You are standing on a border, and in the middle of the span the city line really does change from one side to the other. This guide tells the story of the crossing itself: the bridges that stood here before the present one, the floods and typhoons that wrecked them, and the neighborhoods that grew up on both banks. Details about what you will see on the deck today are best judged with your own eyes, so I will stay with the history and the setting, which are well documented. As you walk or ride, notice that the bridge is not a single structure. The main roadway has narrower companion bridges beside it, and the whole arrangement says a lot about how people here actually move around.