How does the Lincoln Tunnel work?

Designed by Ole Singstad, the tunnel was built by shield-and-compressed-air methods to hold back the outside water pressure. The tunnel consists of three vehicular tubes, each of which carries two lanes of traffic. It is about 1.5 miles (2.4 km) long and lies 97 feet (30 metres) below the river's surface.



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“Its skeletal structure is made up of hundreds of massive 21-ton iron rings that were bolted together. In addition, the interior of the rings is encased in concrete, thereby sealing out the Hudson River.”

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Designed by Ole Singstad, the tunnel was built by shield-and-compressed-air methods to hold back the outside water pressure. The tunnel consists of three vehicular tubes, each of which carries two lanes of traffic. It is about 1.5 miles (2.4 km) long and lies 97 feet (30 metres) below the river's surface.

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Today the Lincoln Tunnel is the busiest vehicular tunnel in the world, carrying some 120,000 vehicles each and everyday. The three-tubes of the Lincoln Tunnel help to connect midtown Manhattan with three different New Jersey expressways including the NJ 495 Freeway, the NJ 3 and the New Jersey Turnpike.

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Designed by Ole Singstad, the tunnel was built by shield-and-compressed-air methods to hold back the outside water pressure. The tunnel consists of three vehicular tubes, each of which carries two lanes of traffic. It is about 1.5 miles (2.4 km) long and lies 97 feet (30 metres) below the river's surface.

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Motorized vehicles only. No pedestrian or bicycle access. Operators of overweight or over-dimensional cargo, or to lead a convoy across the Lincoln Tunnel, must contact the 24-hour Communications Desk at (201) 617-8115 prior to their trip for approval.

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The Lincoln Tunnel was originally proposed in the late 1920s and early 1930s as the Midtown Hudson Tunnel. The tubes of the Lincoln Tunnel were constructed in stages between 1934 and 1957.

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The tunnel does leak, but it is designed to. Seawater from the rocks above the tunnel drips through and is then pumped away.

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Norway, which is considered the world's leader in tunnelling, has a whopping 900 tunnels, including the world's longest road tunnel.

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