Today, L.A. Metro’s subway tunnels connect some of the city’s most densely populated neighborhoods. There are many other ...

rehabilitate and upgrade the 19-mile-long Mountain Tunnel, a key component of the Hetch Hetchy Water System that takes water from Tuolumne County and sends it to San Francisco. The San Francisco ...

Maybe that's because it's also one of the world's steepest roads, chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province ...

You might think the far-fetched idea of twin tunnels whisking Tesla passengers from downtown to the beach might be dead. You would be wrong, Mayor Dean Trantalis says. The long-hyped underground ...

As Colorado Department of Transportation officials were contemplating closing the westbound bore of the Eisenhower-Johnson ...

Thousands of workers are battling the elements to build India's longest tunnel in the Himalayas. But the Zojila tunnel has a greater purpose, as it could be a game changer for India in the country ...

Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable for this digitized archive article. Subscribers may view the ...

An excellent hiking trail with magnificent mountain vistas takes ... Company and brought an end to the system. Operations through the Hollywood Subway Tunnel ceased in 1955. After closing, the ...