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 …

4 days ago · 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 Lincoln Tunnel was the first to introduce an Exclusive Bus Lane (XBL). XBL customers have made a commuting choice that not only reduces the number of cars on our roads, but also helps to lower …

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

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

Jul 31, 2025 · A tunnel is a horizontal or slightly inclined underground passage. Learn about the definition, components, and types of tunnels, including hydraulic and traffic tunnels.

Dec 15, 2025 · Work to begin digging a new Hudson Tunnel is set to begin this spring as two tunnel boring machines custom-built for the project are on their way to New Jersey.

TUNNEL definition: an underground passage. See examples of tunnel used in a sentence.

6 days ago · Disassembled tunnel boring machines are set to arrive in New Jersey for the $16B Gateway rail tunnel, with work advancing despite funding reviews, delays and legal disputes.