While Alternative 3B was not the largest proposal considered by the Army Corps, it is, by far, the largest system of coastal barriers proposed for the city. The Army Corps is also currently building coastal defenses along the waterfront of the Rockaway Peninsula and has begun its initial work on a 5.3 mile-long shoreline barrier in Staten Island.

Other large projects currently underway in the city include the Governor’s Office of Storm Recovery’s Living Breakwaters in Staten Island and the city’s East Side Coastal Resiliency (ESCR) Project in Manhattan. Each of these projects protects a relatively small portion of the city’s waterfront, compared to the Army Corps latest proposal.