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You are here: Home / Accomplishments / Where Is the World’s Longest Tunnel?

Where Is the World’s Longest Tunnel?

July 28, 2020 by Karen Hill

The longest tunnel in the world doesn’t carry the kind of traffic you might think it does.

It’s not an automobile tunnel, as the world’s longest road tunnel, in Austria, is less than nine miles long. A railroad tunnel? No, the world’s longest railroad tunnel is only about 14 miles long.

The longest tunnel in the world really carries water! This tunnel, which is only 13.5 feet wide, brings water from a reservoir in the Catskill Mountains to New York City, a distance of about 105 miles!

A tunnel now being built in Japan, to carry both a road and a rail line, will be 33.5 miles long!

Related Facts

  • Where Is the Longest Railroad Tunnel In the World and How Deep Is the Seikan Tunnel In Japan?
  • What Is the Longest Tunnel In Europe and How Long Is the Gotthard Base Tunnel In Switzerland?
  • What Is the Longest River In the World and What Is the Second Longest River In the World?
  • What was the first mechanically ventilated tunnel in the world and How do long tunnels get fresh air?
  • What Is the Longest Living Animal Species In the World and Which Mammal Lives the Longest?
  • How Big Is the Average Mole Tunnel Network and How Do Solitary Moles Find Each Other To Mate and Reproduce?

Filed Under: Accomplishments

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

Previous Post: « Where Is the World’s Most Powerful Lighthouse?
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