Three bridges cross the river at the same point: the new Roosevelt Bridge that carries US 1 high over everything, the old Roosevelt Bridge below it that opened in 1964 and still carries the local traffic, and the railroad lift bridge from 1938 that raises its span for every boat and lowers it for every train. From the sidewalk of the new bridge at seven in the morning you can watch all three work at once, which is reason enough to walk up there.