Motorway A 73, Pipe-Truss Road Bridge

Lichtenfels, Germany
Lichtenfels, Germany
ABD Nordbayern
Effective arch span
96.30 m
Total length
122.63 m
§43: Lph 2, 3, 4, 5, 6 / §51: Lph 2, 3, 4, 5, 6

This civil engineering structure, with a cross-section width about 11 m, is the first integral pipe-truss road bridge with completely welded pipe joints ever to be built in Germany. One of the special features during the planning phase was the analytical assessment of the fatigue strength of the deployed thick-walled pipe cross sections (maximum: 813 mm x 50 mm) / joints. For this assessment, test bench experiments were performed in order to verify the static-dynamic/structural calculations.

SSF Ingenieure has been given the Award for Innovations in Steel 2009 in the category “Steel elements and systems for construction”. We achieved 3rd place for Germany's first fully welded integral composite bridge made of big dimensioned pipes.