Take your camera! It is pretty cool. Your timing may be right to see the first road deck section lifted from the barge. If there is a barge right in the middle of the span, that means they are getting ready to lift. This will be at a slack tide (current). I was there today, and they are working on the first deck section, now on the lifting barge. It is anchored just south of the ship.
My only pearl is never get directly upstream of the towers. That would be a bad place to loose power, or get distracted. Last winter a fisheries boat stopped some fishermen, then left to do paper work. They drifted along as the fisherman watched in horror as the fisheries boat drifted into one of the towers. The current smashed the boat against the tower and the boat turned over. The two aboard were pulled from the water, and were ok. :? It may not look like a river when you are out there, but it is. If you keep your distance from the towers, tugs, ship, and barges, and keep an extra eye out for flotsam, it is an easy passage. Robbi
Have a wonderful trip.