In 1940, Moses proposed an expressway between Queens and Brooklyn to relieve local streets of congestion from the Manhattan and Williamsburg Bridges. The section between the Kosciuszko and Williamsburg Bridges opened on May 25, 1950. A further extension between the Brooklyn–Battery Tunnel and the Brooklyn Bridge, which included the Brooklyn Heights Promenade, was opened on June 23, 1954, connecting to the Gowanus Expressway. This was followed by a mile-long section between the Williamsburg Bridge and Flushing Avenue on September 1, 1958. Two sections of the expressway opened on August 26, 1959: a segment between the Brooklyn Bridge and Tillary Street in Brooklyn, and between the Grand Central Parkway and Roosevelt Avenue in Queens. The expressway between Tillary Street and Flushing Avenue, around the Brooklyn Navy Yard, was opened shortly thereafter on January 6, 1960. The road in its entirety was completed on December 23, 1964 at a cost of $137 million, with the opening of a mile-long underpass connecting Queens Boulevard with Roosevelt Avenue. The major interchange with the Long Island Expressway was rebuilt in 1966 for $32.7 million.