During the 1940s and 1950s, the building of the Brooklyn-Queens Expressway (BQE) badly affected the neighborhood, as it took away the neighborhood's northwest corner, destroying whole rows of brownstones. At about the same time, plans began to be developed by New York's "master builder", Robert Moses, wielding the Housing Act of 1949, to replace brownstone rowhouses – which were the typical building form in the neighborhood – with large luxury apartment buildings. A prominent example of the intended outcome is the Cadman Plaza development of housing cooperatives in the northern part of the neighborhood, located on the site where the Brooklyn Bridge trolley terminal once stood. In 1959, the North Heights Community Group was formed to oppose destroying cheap low-rise housing in order to build the high-rise Cadman Plaza towers. Architect Percival Goodman presented an alternate plan to maintain all sound structures, which garnered 25,000 supporters. In early 1961, a compromise proposal came from City Hall calling for two 22-story towers with over 1,200 luxury and middle income units. The Brooklyn Heights Association fully supported the compromise plan despite strong opposition from the preservation community, including the North Heights Community Group. As a result, 1,200 residents were removed from their houses and apartments in late 1961 and early 1962 as construction began on the modified plan.