An underwater tunnel linking the city to create Forks Stone Kent, Great Britain, with the District Court attractive little town of Calais in northern France. The tunnel was built beneath the English Channel at the Strait of Dover. Which is the narrowest part of A 34-kilometer Channel Tunnel total length of 50.5 km in the bottom of the ocean length of 37.9 kilometers of undersea minimum of 75 meters and a depth of 230 meters [1] [2] Channel Tunnel Construction. and managed by Euro Tunnel, which handles high-speed Eurostar train. Construction began in early 1988 to enable the tunnel on May 6, 1994 Open to traffic on November 14, 1994, the construction cost £ 4,650 more than the predicted 80. % [3] The concept for the construction of the Channel Tunnel. Have been proposed since the 19th century, with the proposal to Emperor Napoleon the third in 1856 with a budget of 170 million francs (£ 7 million) [4] and the William Grant. reduce Houston's premier UK in 1865 [4], but the project was canceled due to political, security and defense, this project was considered again in 1955 by the cut. problems with the defense out. Because at that domestic abuse may be made by an air raid. But the project was delayed due to political problems in the United Kingdom until 1981, Mrs. Margaret Thatcher and Mr. François Mitterrand's deputy leaders of the two countries has achieved. agreement on the construction of this tunnel.