Tunnels

http://top10latest.com/top-10-longest-rail-tunnels-in-the-world/

Seikan Rail Tunnel  Japan 53.8km length, the listing for the longest rail tunnel has so far been heard seized by the Seikan Rail Tunnel connecting the island of Honshu to the island of Hokkaidu. Opened in 1988, this moment tunnel has a 23.5 km stretch that has been heard erected beneath the sea-bed. It is the deepest rail tunnel in the world.

http://www.coloradodot.info/travel/eisenhower-tunnel

Eisenhower Tunnel are located approximately sixty miles west of Denver, Colorado on Interstate 70, and are a part of the Colorado Department of Transportation.  We are one of nine Maintenance and Operations Sections 
 

http://top10latest.com/top-10-longest-rail-tunnels-in-the-world/

 Channel Tunnel England and France Popularly famed as the Chunnel, such a tunnel if a truly convenient rail link between England and France, for the duration of a railway line, way short of the sea bed. It is 49.9km for a long while and 37.9 km of it is beneath the sea, hence bringing about it the longest undersea tunnel in the world