Steel cable fixing of a suspension bridge, Friedrich-Ebert-Bruecke, Duisburg, NRW, Germany

brucke bridge bridges buildings cable cables cities city color colorful colour colourful construction detail details duisburg ebert engineering exterior fixed fixing force friedrich friedrich ebert brucke germany girder hang hanging made material north nrw of outdoor outdoors protection red rhine rhine westphalia rhineland rope rust screw screwed steel steely strong suspend suspension technique thick town towns tractional tractive westphalia