It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation …

The Hudson Tunnel Project will make two crucial improvements to the national rail network: Building nine miles of new passenger rail track between New York and New Jersey, including nearly five …

3 days ago · The first four tunnel boring machines are coming to New Jersey to build the Gateway rail tunnel. Here's what they do and why they're the safest method.

Dec 19, 2025 · tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone. A …

The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction. How to use tunnel in a sentence.

The Hudson Tunnel Project proposes to construct a new tunnel and associated railroad infrastructure to carry passenger rail trains under the Hudson River while the existing tunnel is being rehabilitated, …

Constructing a tunnel is one of the most complex challenges in the field of civil engineering. Learn about the basics behind tunnels.

TUNNEL meaning: 1. a long passage under or through the ground, especially one made by people: 2. the long passage…. Learn more.

12 hours ago · China built the world's longest expressway tunnel using innovative approaches and cut down travel time in half between two cities.

In general, tunnels are at least twice as long as they are wide and are completely enclosed on all sides, save for the openings at each end. A tunnel may be used by pedestrians, cyclists, motor vehicles, or …