The Brooklyn-Battery Tunnel cost $90 million to build, and is still the longest continuous underwater vehicular tunnel in the world, measuring 9,117 ft. in length.
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Technically called “Tunnel Street,” the three-block-long passage is the city's only underground street, according to 6sqft. It serves as a Broadway entrance to the 191st Street subway station, which, at 175 feet underground, is the deepest in the system.
The Laerdal Tunnel in western Norway is the longest road tunnel in the world. It takes about 20 minutes to pass through the tunnel. Brightly colored lights placed every six kilometers help drivers stay alert.
The Atlantic Avenue Tunnel is officially the world's oldest subway tunnel. This tunnel was built in 1844 beneath a busy street in the City of Brooklyn (Brooklyn did not become part of NYC until a half-century later). The Atlantic Avenue Tunnel is a half-mile long and accommodated two standard gauge railroad tracks.
Gotthard Tunnel with Italian and German interests. After 10 years of excavation, marked by labour unrest and the death of some 167 workers, the 9.3-mile (15-km) tunnel—then the world's longest—opened in 1882. Thus, the cantons of Uri and Ticino were connected by rail, and…
That's right, the Union Canal Tunnel, located in Lebanon, PA is considered the oldest transportation tunnel in the United States, having been completed in 1827.
In cooperation with Rönesans Holding, the Heitkamp Construction Swiss GmbH tunnel and railroad construction specialists constructed the world's longest and deepest tunnel, the Gotthard Base Tunnel. This 57 kilometre-long tunnel lies at a depth of 2,300 metres.
The Howard Tunnel is located near Seven Valleys, Pennsylvania. In operation since 1838, it is the second oldest active rail tunnel in the U.S. Originally constructed by the York and Maryland Line Rail Road, it formed a critical link in the north-south line assembled by the Northern Central Railway.
The Holland Tunnel is a vehicular tunnel under the Hudson River that connects Hudson Square and Lower Manhattan in New York City in the east to Jersey City, New Jersey in the west.