Don't miss the full moon tonight - it will be the biggest since 1993!
http://news.nationalgeographic.com/news/2008/12/081212-full-moon-biggest.html
This also explains the extremely high tides. Perhaps it is unreasonable to expect the roads to accommodate unusual times of year.
Certainly it is unrealistic if one lives here. I am used to checking the tides before I attempt to walk on the bike path which was well under water yesterday with birds happily afloat on winter cheer.