Sustainable Urban development of South Boston as creating connection between Downtown and adjacent neighborhoods. The Big Dig project which buried down the elevated I-90 road into a Tunnel passing through South Boston and Boston harbor in a Reflexive way to what the city was planning to remove Highways from interconnecting with neighborhoods. Creating more open space as there is more than 45 parks and plazas in this area, increasing towards Downtown connecting to other neighborhoods which is called Rose Kennedy Greenway. A boulevard of several miles Sidewalks, trees and several plazas offering easy access from Downtown to adjacent neighborhoods.