There are only TWO on that route that are bad news, and I sent them to Holger (didn't hear back yet). Both are concrete and go at water level across the river. They are ahead of you about 70 miles. In "real life" that wouldn't be there, a flood would take it out and it keeps the river from being navigable ... so those are program errors I think. But you are right, the rest of the bridges are really something. That's something else you never see from the air .. with all the structure that goes into them, etc.
You'll run into some beautiful scenery about 30 miles ahead of where your pics were taken and there are some very narrow places, but you'll get through easily (just slowly). Great Pics!
D