BW 67-1 A graceful and innovative bridge over the A73 Germany‘s first fully welded integral pipe-truss composite bridge made of large pipes. For the very first time in German road bridge engineering, the truss nodes of the supporting structure were formed as welded pipe nodes without using cast nodes. The previously very retentive use of hollow steel profiles when building bridges results from the fact that the seam root is no lon- ger visible and can therefore no longer be checked. Generally in
