The series in which Robbie Coltrane examines bold attempts to push the limits of design.

The world's longest single bridge span is set to arch for more than a mile over the Baltic Sea, part of an audacious plan to link Germany via Denmark to Sweden. It will need cables around a metre thick to carry a road deck that can survive sea winds. But designer Niels Gimsing is haunted by previous bridge builders who have pushed the limits too far.
(Stereo)
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