Season 4Episode 346m
Floating Bridge
2009-02-050.0 rating
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?
2009-02-050.0 rating
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?