The Queensboro Bridge, which provides both a ceiling and a name for this park, opened in 1909, connecting Manhattan and Queens by way of an intermediary link on Roosevelt Island, was once known as Welfare Island. The two-leveled steel bridge is one of eight New York City bridges that span the East River. Designed by engineer and architect Gustav Lindenthal (1850-1935), it is the first major structural project to reject the suspension technique in favor of cantilevering. The upper level once carried wooden railway cars, and five-cent trolleys shared the lower level with automobiles until 1955. In addition to his work on the Queensboro Bridge, Lindenthal prepared plans for the Manhattan Bridge, helped to complete work on the Williamsburg Bridge, and directed the reconstruction of the Brooklyn Bridge. The National Register of Historic Places added the Queensboro Bridge, officially named the Ed Koch Queensboro Bridge and known as the 59th Street Bridge, to the list of City landmarks in 1978.
The site, bounded by York Avenue and 59th and 60th Streets, is built on land that the City of New York initially acquired for use as an alternative bridge approach and is a City Department of Transportation property managed by NYC Parks. The site is covered by an inflatable bubble and operated as a tennis facility, which is run under a concession license. With opportunities for sport and recreation, Queensboro Oval is a thriving oasis beneath a major thoroughfare.