The Dryline — watch a green flood barrier grow in East River Park

Last summer, the feds announced a huge $335 million grant for a storm surge barrier running from East 23rd Street to Montgomery — the first phase of what was dubbed the “Big U” to protect all of lower Manhattan from another storm surge like the one in 2012.

Now the project has been rebranded the “Dryline,” and this brief video has been released to describe its philosophy and ambition. Also, for the first time, you can see renderings of what this barrier might look like — and the cool animation lets you see it rise up before your very eyes: