Just found it. So they wanted to do the whole bay, with gated sea walls. Look I know you believe it would be gross but this has been done before. The Dutch seriously do this all the time. We're kind of at the point where if we don't we'll be almost assured the yuppie folks in South Boston waterfront will be taking water taxis to work.

https://www.reddit.com/r/boston/comments/p7rg01/175mile_seawall_sea_gates_proposed_to_protect/