The completion of the Brooklyn-Battery Tunnel in May, 1950 marked the end of 10 years of planning and engineering, overcoming back-breaking labor, war, and financial difficulty that stood in its way.
At the time the nation’s longest most modern underwater vehicular tunnel, the Brooklyn-Battery tunnel had about as turbulent a history as any of New York’s infrastructure. It was the most expensive two-mile bit of highway ever built at the time - costing more than $40,000,000 a mile.
A connection between Brooklyn and Manhattan was first conceived of in 1929. Initially, a graceful, double-unit suspension bridge was to connect the boroughs, featuring a ramp leading down to Governor's Island at the apex. Unfortunately, various groups objected against its potential to disfigure the Battery Park Landscape, and President FDR cited security concerns. In the end, the War Department barred the construction of the bridge in 1939.
Funding dwindled on the endeavor to drill a two-mile tunnel between Battery Park and Brooklyn until the Reconstruction Finance Corporation offered $57,000,000 in loans towards its construction. Ground broke on October 28th, 1490, with President Franklin D. Roosevelt on hand for the momentous occasion.
Major construction work began in 1941 and for nearly two years, it slowly marched forward. On the Manhattan end, a hole 24-feet in diameter was carved through solid rock which began 2,800 feet under the surface of the river. The Brooklyn side was challenged with softer rock to drill through at about 1,000 feet from the entrance at Hamilton Avenue and Van Brunt Street.
The United States entry into World War II put an end to construction on the tunnel, leaving both materials and manpower becoming scarcer every day. In fact, progress on the tunnel came to a standstill towards the end of 1942. For three years the whole project lay idle, only the throne of pumps on the Brooklyn side signifying that the tunnel job was not forgotten.
Things began humming again at the end of the war in 1945. Water was pumped out, concrete shields were removed, and men came back to work. It took another five years for the tunnel to be completed and acclaimed as a modern marvel. Fully illuminated, with fresh air exchanged every 90 seconds, the tunnel was opened with great fanfare.
