1. Bridge height is to middle span at mean high water. There are differing opionions about whether any hanging lights are included. I assume it's to the girder and not the steel
. In this stretch there is no significant lunar tide. The problems is that wind
and rain can raise (or lower) water levels by 2ft+. You may have to wait several days for water heights to move to average. Height markers on bridges in this stretch are quite accurate. People worry about the '64 charted height of the Wilkerson but I think the Pungo Ferry
bridge is as tight or tighter. Consider going around by Manteo to skip the Wilkeson (although there are some shallow stretches). The picture below is as we went under Pungo Ferry
after we anchored for two days to let the water drop 18" .
2. Chart depths are not particularly accurate but ActiveCaptain tells you the problem areas. Look for the yellow markers on ActiveCaptain and read the comments. This stretch has relatively few shallow areas compared to farther south because they need to keep it dredged for the frequent barge traffic.
3. Yes. You can make it. I (and many others) do it with 64'. Is the 63' to the top of the mast
or the top of antennas? If you have a windex up there, take it down in Norfolk so a bridge won't.