<b>first generation:</b> 1856 to 1857 covered wooden bridge on driven wooden pillars, lattice principle Howe, later the wooden pillars were protected by cast iron tubes. 1899/1900 were built between the tube pillars of stone pillar then, <b>second generation:</b> in 1927, the wooden bridge was demolished and replaced by a fully-walled steel trough, for this the old piers were used. These had to be renovated 11976, <b>third generation:</b> new pillar with bored piles were built for the new pre-stressed concrete bridge from 1994
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