under water tunnel of the world

                                                                    under water tunnel of the world 

An undersea tunnel is a tunnel which is partly or wholly constructed under a body of water. They are often used where building a bridge or operating a ferry link is impossible, or to provide competition (or relief) for existing bridges or ferry links.

• Thames Tunnel The oldest underwater tunnel in the world. (0.4km) (1825 - 1843).

 

Thames Tunne

• Severn Tunnel One of the oldest underwater tunnels in the world (3.62 km) (1873 - 1886).

 

•  Chesapeake Bay Bridge Tunnel (23 mi), connecting Virginia Beach with the Eastern Shore of Virginia (1960 - 1964).

 

Chesapeake Bay Tunnel 

Inside Chesapeake bay Bridge Tunnel 

      

• Cross Harbour Tunnel, Hong Kong, a busy road tunnel (opened in 1972).

  

Cross Harbour Tunnel

• Transbay Tube (5.8 km) (1965 - 1974).

 

Transbay Tube

• New Elbe Tunnel, Hamburg, Germany, 8-lane road tunnel crossing the Elbe river (1968 - 1975).

 

New Elbe Tunnel

• Vardø Tunnel (2.9 km), connecting the small island community of Vardø in northern Norway to the mainland (1979 - 1982).

 

Vardø Tunnel

Vardø Tunnel map view

Graphical view  Vardo tunnel

• Seikan Tunnel, world's longest undersea railway tunnel (53.9 km), when non-undersea portions of the tunnel are also measured (1971 - 1988).

 

Seikan Tunnel

 Graphical view Seikan Tunnel

• Sydney Harbour Tunnel (2.8 km) (1988 - 1992).

  

outside image of the bridge underwater 

Sydney Harbour Tunnel

Sydney Harbour Tunnel from inside 

• Busan–Geoje Fixed Link, world's deepest immersed road tunnel (48 m below mean water level) (opened in 2010).

 

Busan–Geoje Fixed Link

map view of Busan- geoje fixed link 

• Channel Tunnel, world's longest undersea portion railway tunnel (37.9 km) (1988 - 1994).

 

Channel Tunnel

Graphical view of Channel Tunnel

• Tokyo Bay Aqua-Line, world's longest undersea portion road tunnel (9.6 km) (1988 - 1997).

 

Tokyo Bay Aqua-Line

Graphic of Tokyo Bay Aqua-Line

• North Cape Tunnel (6.8 km), The tunnel goes under the Magerøysundet strait between the Norwegian mainland to the large island of Magerøya and the North Cape, Norway (1993 - 1999).

 

North Cape Tunnel

• Bømlafjord Tunnel, a road tunnel (7.8 km) (1997 - 2000).

 

Bømlafjord Tunnel

 Graphic veiw of Bømlafjord Tunnel

• Eiksund Tunnel (7.7 km), world's deepest undersea road tunnel (opened in 2008).

 

• Marmaray, connecting Asia and Europe (2004 - 2013).

 

  

Graphic view
Marmaray

• Marina Coastal Expressway, Singapore's first undersea tunnel (opened December 2013)

   

Marina Coastal Expressway

 

Railway through the bridge 

• Helsinki to Tallinn Tunnel
• Rio de Janeiro Metro Bay Tunnel (Line 3 – Rio de Janeiro-Niterói)