One of the greatest achievements of New York City power broker and infrastructure builder Robert Moses, the Brooklyn-Queens Expressway transformed Brooklyn in the mid-20th century. It created pathways for cars, cut off the industrial waterfront from brownstone Brooklyn — cementing, literally, class inequalities in the landscape — and set the stage for the landmarking of Brooklyn Heights. Some 70 percent of the Brooklyn portion was completed by 1954, including the cantilevered section crowned by…