Surfing around via Technorati, I found this blog post with satellite photos of the Hernando DeSoto Bridge and a few other Memphis bridges.
Not entirely conincidentally, I started Engineers of Dreams: Great Bridge Builders and the Spanning of America on the flight back from Durham, and probably would have finished it if I hadn’t fallen asleep on the Baltimore-Jackson leg; what I didn’t realize, since I bought the book at least a year ago, but only now got around to reading it, is that the author is a future colleague. Small world and all that.