Micheville Link Phase 2
Tunnel sliding under railway tracks
As part of the construction of the Micheville link, which connects the Esch-sur-Alzette bypass motorway to the N31 in France, Félix Giorgetti carried out the jacking of an 8,000-tonne tunnel.
The Félix Giorgetti teams built two separate reinforced concrete frames on site which were jacked under the CFL Cargo railway tracks, on the Luxembourg-Pétange line, as well as a 28m connection structure.
The tunnel sections were precast on a guide slab founded on 50 piles in front of the embankment of the railway tracks. For the box jacking process, excavators gradually excavated the embankment from inside the structure, allowing the tunnel to be thrust forward into the space. This was followed by backfilling and repositioning of the tracks.
2 frames wide
Redesign of the Pontpierre interchange
Redevelopment of the Pontpierre interchange on the A4 to improve traffic flow and safety for local residents.
Construction of a 2.2 km bypass to relieve traffic congestion on the rue des Trois Cantons.
Hosingen cut-and-cover tunnel
The cut-and-cover tunnel is the first section of the Hosingen bypass.
New railway line Bettembourg-Luxembourg
Construction of a 1.7km section of the new railway line between Bettembourg and the capital.