Projects
Rengelbur Ecoduct (wildlife crossing)
Category
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.
172,000m3
Excavated materials
36,500m3
Backfill
12,000m3
Reinforced concrete
1,400t
Steel
Key figures
Width between the side and central walls
12.10m
Clearance above the road/below the slab
5.20m
Make up the foundations (4.5m wide and approximately 90cm thick)
3 strip footings
Thick slab which rests on four 65cm-thick walls
1m
Waterproofing
9,000m2
Sewerage pipe
1,000m
Asphalt mixes
870 t
Road structure
10,000m3
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