A long-term ailing infrastructure and restrictions on the issuing of transport permits continue to require innovative solutions, not only to significantly reduce axle loads and dead weights. It’s not just the Baumann company that has relied on the innovative and lightweight design of Greiner girder bridges for generations. With decades of experience from the Baumann transport professionals and the know-how of Greiner Heavy Engineering, a technically completely revised solution has been put into operation.

Sabine Baumann emphasizes: “We have been working in close partnership with Greiner GmbH for decades. The idea of the new 450-ton girder bridge emerged due to the challenges of the energy transition, i.e., higher weights of transformers while infrastructure is simultaneously deteriorating. Together with Greiner, we developed the new 450-ton girder bridge. The demand for this new technology is already exceeding our expectations, and the bridge has already been fully booked for months and will be in use across Europe next year.”

The core of this “lightweight” is the proven side sliding extension, which is free of bending moments. This has now been further developed with several variable folding extensions, making it even more flexible. Unnecessary elements and other add-on parts, such as the empty travel device or the modular, variable-length load distributor, can be dismantled for transport if necessary, significantly reducing the dead weight again. The scissor lifting element was also structurally adapted to the latest findings and materials, further significantly reducing the dead weight. To handle all transport eventualities, the scissor lift bridge can be raised up to almost 2,500 mm below the bottom edge of the girder. The Greiner principle clearly demonstrates that a multifunctional variant with the ability for self-supporting transformer transport and load beams in the low-bed area are not contradictory.

This solution completes the Baumann girder bridge fleet in the upper class. Baumann already has, among others, specific 150-ton and 350-ton variants made by Greiner. In combination with the modern and lightweight Goldhofer THP/FT and THP/SL-L platform trailers and the practical experience of the Baumann experts, a transport concept was created not only to support the energy transition.

At the end of August 2024, the final handover took place on the Baumann company premises with an overload test, which the bridge mastered without any problems. (Picture 4 shows Sabine Baumann in the middle with satisfied employees after the successful load test).

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