C&NW crossed the Pecatonica River twice between Freeport and Rockford, IL. The bridge in town has been removed. But the one in the country has been preserved as a trail bridge. The river must have some heavy floods because the span over the flood plain is as long as the span over the channel itself. I had noticed there were a lot of oxbow lakes northwest of Freeport. So that means that area is low and flat. It is good that Freeport has kept development off that land.