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Propping supports French level crossing removal

Construction of a road underpass in Molsheim, France by main contractor Eiffage is being fast tracked through the use of hydraulic props from Groundforce.

The work will remove a level cross that is currently causing major traffic congestion in the Bas-Rhin region town.

The only route into the town is via the crossing but with 128 trains using the line and 16,000 vehicles on the road each day it a major problem.

Eiffage approached Groundforce to supply a support solution for the tunnel entrance and a total of 43 hydraulic props have now been delivered. These include MP50, MP150 and MP250s, plus Mega and Super Mega waling beams, along a total length of 141m.

Work on the closure of the level crossing started in June 2017 and is due to complete this spring.

The project consists of installing a 200m tunnel approach formed by diaphragm walls to a depth of 14m with a 1m thick floor slab.

Three temporary decks with rail tracks were laid by Eiffage to allow rail traffic to continue to operate while works continued underneath in preparation for the new permanent concrete decks to be installed to support the new rail tracks.

“Using Groundforce’s hydraulic props offered numerous advantages, such as increased safety when installing and removing the props, plus time-savings,” said Eiffage works manager Nicolas Farges.

“Eiffage pays very close attention to safety, it’s one of our top priorities. The safety criterion was decisive in the choice of this process due to the reduced number of handling operations and installations which is far less complicated than the so-called “traditional” solution.”

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