Rengelbur Ecoduct (wildlife crossing)
A wildlife crossing on the Route du Nord
Construction of the “Rengelbur” wildlife overpass as part of the construction of the Route du Nord on the W interchange section.
With a length of 150m, the overpass consists of a double open frame type structure in reinforced concrete and has three juxtaposed tunnels. The central tunnels carry the Route du Nord and Mersch bypass traffic, while the west tunnel takes over the two-way traffic from the diverted N7.
The wildlife crossing was built using the cut and cover method. In other words, the work involved conventional excavation for the tunnel frames, followed by backfilling around and on top of the slab in order to restore the local vegetation.
The rounded shape of the discharge outlets meets the crossing requirements for large animals.
Width between the side and central walls
Clearance above the road/below the slab
Make up the foundations (4.5m wide and approximately 90cm thick)
3 strip footings
Thick slab which rests on four 65cm-thick walls
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.