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40th anniversary special: A world of possibilities?


I disagree with some of the figures in that to include the whole of the Thirlmere Aqueduct is misleading. The bulk of the aqueduct is cut and cover ie a covered canal and no more a tunnel than a pipeline. The true tunnel is under Dunmel Raise and is 3 miles long. The longest real tunnel is the Delaware Aqueduct at 137km. The Danyang Kinshan Bridge has a standard span of 80m whereas the world,s longest span is 1,991m. However this shows that it would be easily feasible to bridge the Bering Straights which is only 80km but such route joining Asia and America would pass through very low populated areas on both sides for an enormous distance. Archie

Posted date

14 June, 2012

Posted time

12:37 pm