A railroad bridge has to be laid over a four-lane federal highway near Flensburg. It is made of steel, 46 meters long, eight meters wide, over three meters high and weighs 267 tons. Two mobile cranes are needed for this. They weigh over 100 tons and can lift up to 1,000 tons. These extreme weightlifters first have to be assembled themselves, and their parts transported to construction sites.This report shows how they are assembled and used.

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