I did the ocean side of Delmarva a few weeks ago, on my way to NY. I did it in 28 ft boat, I motored part of it "inside". Here is a link
http://www.sailnet.com/forums/cruisi...tml#post394646
There is 40 ft bridge and very shallow inside. My memory is fresh now and I have some GPS tracks, so PM me if you need more info
Best
Vlad