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More information:

  ACOBRI - Design Software for composite bridges
  Publication: Bridges with rolled sections
  ArcelorMittal Commercial Sections - website

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Technical Advisory Bridges:
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Françoise LABORY
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PreCoBeam - Prefabricated Composite Beam for Bridges

The concept for this new type of composite beam was invented in the beginning of the new millenium and in the last years, the ArcelorMittal R&D department and their partners have spent a lot of time testing and optimizing the solution:

Now the PreCoBeam is ready and marks the beginning of a new method of bridge construction with rolled steel profiles - competitive and sustainable!

The aim was to improve the mechanical performance of steel, specially the fatigue behaviour, and to reach a higher degree of prefabrication of the elements in order to reduce the installation time.

The Prefabricated Composite Beam (PreCoBeam) is made of a heavy beam that is oxycut along its web with a specific geometry that on the one hand creates the special bond with the concrete and thus substitutes the welded shear studs in standard solutions, and on the other hand improves the beam's fatigue performance.


- high safety standard for vehicle impact, especially for bridges with only two girders (shock),
- reduction of coating surface,
- elementary steel construction nearly without any welding,
- sparse maintenance and easy monitoring.

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