History of the Panama Canal
During World War II, the canal proved a vital part of the U.S. military strategy, allowing ships to transfer easily between the Atlantic and Pacific. Politically, the Canal remained a territory of the United States until 1977, when the Torrijos–Carter Treaties began the process of transferring territorial control of the Panama Canal Zone to Panama, a process completed on 31 December 1999.
Atlantic Bridge, Panama
The third bridge over the Panama Canal, known as the Atlantic Bridge, is a road bridge under construction in Colón, Panama, which will span the Atlantic entrance to the Canal. When completed it will be the third bridge over the Panama Canal after the Bridge of the Americas and the Centennial Bridge, both on the Pacific side of the canal.