and carfloats, with a large cluster along the Harlem River. The era of the ocean liner around the turn of the 20th century led to the creation of berths at North River piers and Hoboken. This coincided with the immigration of millions, processed at Castle Clinton and later at Ellis Island, some staying in the region, others boarding barges, ships, and trains to points across the United States. In 1910, the port was the busiest in the world. During the World Wars the waterfront supported shipyards and military installations such as the Federal Shipbuilding and Drydock Company and the Brooklyn Navy Yard and played an important role in troop transport as a Port of Embarkation. The mid-century also saw the construction of major highways such as the Belt Parkway, East River Drive, and Major Deegan Expressway along parts of the shoreline. The era of the longshoreman, captured in the classic film On the Waterfront, faded by the 1970s as much of the waterfront became obsolete due to changing transportation patterns. The nation's first facility for container shipping, which became the prototype, opened in 1958. Expanded intermodal freight transport systems and the Interstate Highway System effected a shift to new terminals at Newark Bay. Since the 1980s, sections of waterfront in the traditional harbor have been being redeveloped to include public access to the water's edge, with the creation of linear park greenways such as Hudson River Park, Hudson River Waterfront Walkway, and Brooklyn Bridge Park. The CMA CGM Theodore Roosevelt, the largest ship to call at an East Coast port, passed under the raised Bayonne Bridge in July 2017, signalling a new era of container capacity. Jurisdiction and regulation Responsibilities within the port are divided among all levels of government, from municipal to federal, as well as public and private agencies. Established in 1921, the bi-state Port Authority of New York and New Jersey, in addition to overseeing maritime facilities, is responsible for the vehicular crossings and the rapid transit system between New York and New Jersey, several of the region's airports, and other transportation and real estate development projects. The Port Authority maintains its own police force, as does the Waterfront Commission, created in 1953 to investigate, prosecute, and prevent criminal activity. The United States Army Corps of Engineers, which has been involved in harbor maintenance since about 1826, when Congress passed an omnibus rivers and harbors act, is