Overview:Can engineers make 6,000-ton concrete pontoons float? That's the only way to construct this astonishing bridge in Canada, but can they pull it off?
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First Air Date: Sep 18, 2005Last Air date: Mar 29, 2012Season: 6 SeasonEpisode: 41 EpisodeRuntime: 26:14 minutesQuality: HDIMDb: 10 / 10 by 0 usersPopularity: 0.6133Language: en
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