By 1890, due to the popularity of the Brooklyn Bridge, there were proposals to construct other bridges across the East River between Manhattan and Long Island. Although a second deck for the Brooklyn Bridge was proposed, it was thought to be infeasible because doing so would overload the bridge's structural capacity. The first new bridge across the East River, the Williamsburg Bridge, opened upstream in 1903 and connected Williamsburg, Brooklyn, with the Lower East Side of Manhattan. This was followed by the Queensboro Bridge between Queens and Manhattan in March 1909, and the Manhattan Bridge between Brooklyn and Manhattan in December 1909. Several subway, railroad, and road tunnels were also constructed, which helped to accelerate the development of Manhattan, Brooklyn, and Queens.