Thought I would mention for everyone else reading this post that has not made the trip. Get a copy of Skipper Bob's Anchorages and check for updates on the ICW @: Skipper Bob
This site has accurate info on bridges: Bridge Restrictions | Intracoastal Waterway Facilities Guide
Also, the stretch between St. Mile 240 to 233 has several spots that are 6'5" at full flood. In some of those places the channel is about 25'-30' wide (additional nuns have been added) We completed that stretch 2 days ago and were lucky to have do it at high tide. For those moving North, stay in Mile Hammock Bay until 1.5 hours prior to high tide, then head north. It takes about one hour to get to Onslow Beach Bridge (opens on the hour and on the half hour), then the fun begins!!!!!
Hope that everyone has a safe trip.