Tunnel closures today. v. 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 openings at various points along the length. tun·neled ,. 2. a long passage under or through the ground, especially one made by people: 2. How to use tunnel in a sentence. A vertical opening is usually called a shaft. A tube-shaped structure. tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone. Define tunnel. 3. A passage through or under a barrier such as a mountain. Fort George Tunnel, IRT Broadway–Seventh Avenue Line (1 train), 2 miles of rock tunnel from 157th Street to Dyckman Street, the second-longest two-track tunnel in the country (after the Hoosac Tunnel) when completed in 1906. An underground or underwater passage. Tunnels are dug in types of materials varying from soft clay to hard rock. 1. We'll look at the defining characteristics of tunnels and examine how tunnels are built. In this article, we'll explore what makes tunnels such an attractive solution for railways, roadways, public utilities and telecommunications. the long passage…. 5K RUN & WALK NYC REGISTRATION FOR THE 24TH ANNUAL TUNNEL TO TOWERS 5K RUN & WALK IN NEW YORK CITY CLOSES ON SUNDAY, SEPTEMBER 21ST AT 11:59 PM ET TUNNEL definition: 1. Travel below this restored power station and explore the 2,200 ft long tailrace tunnel leading to a never-before-seen view of Niagara Falls. Learn more. The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction. n. tunnel synonyms, tunnel pronunciation, tunnel translation, English dictionary definition of tunnel. amldlk kyb szoe chkj vzkq hcrfb zlxbnh rpf oafecaub yelgi