The Brooklyn-Battery Tunnel is a major roadway that connects Brooklyn and Manhattan in New York City. Opened in 1950, it runs under the East River, providing a vital link for vehicles traveling between these two boroughs. The tunnel is approximately 1.7 miles long and is designed to ease traffic congestion in the area. The tunnel is officially named the Hugh L. Carey Tunnel, after a former governor of New York. It features two tubes, each accommodating two lanes of traffic. The Brooklyn-Battery Tunnel is an essential part of the city's transportation infrastructure, facilitating daily commutes and commercial transport.