Can Corps of Engineers not do the math? I get that we can create infrastructure like this, especially for a major military base, but how can anyone think the cost and ongoing maintenance is scalable to the number of coastal cities?
– Rebuilding reefs is a great idea: reducing storm surge and no moving parts to need replacing
— vegetation is a great idea: reduce erosion with no moving parts to need replacing
Ok fine, Boston has had flood gates for over 100 years