Projects
Stafelter Tunnel
Category
Stafelter Tunnel
Construction of a 1,650m tunnel and a 200ml covered section
The Stafelter tunnel, which connects the Waldhaff interchange in the south and to the Heeschdrëfferbierg plateau in the north, consists of two two-lane tubes.
Its underground length is 1,850m, including 1,650m of tunnel and 200m of covered section.
The Stafelter tunnel connects the Waldhaff interchange in the south with the Heeschdrëfferbierg plateau in the north.
350,000m2
Total volume of the excavation
75,000m2
Shotcrete and coating concrete
Works carried out
Félix Giorgetti was responsible for the following:
- Platforms for site installation;
- Earthworks for the north and south entrances and the covered section;
- Road works outside and inside the tunnel;
- Arrangement of tunnel heads.
The 1,650m were excavated from the only southern portal with staggered excavations on both fronts.
The Stafelter Tunnel has a horseshoe profile and was dug according to the principles of the Austrian N.A.T.M. method. This method was developed during the years 1957-1965 and the general idea is to use the intact rock around the tunnel to stabilise the structure.
Key Figures
Motorway tunnel – two tubes, with 2 or 3 lanes, in the shape of a horseshoe.
1.650ml
Covered section in the north consisting of 2 tubes
200m
Operating buildings
2
Galleries at a distance of 270 m each
6
Emergency bays at a distance of 90 m each
40
Retention pond
1
Excavation profile for the horseshoe section
72.39 to 76.15m²
South gate: excavation
130,600m3
North gate: excavation
113,650m3
Backfill
7,500m3
Covered section in the north: excavation
79,500m3
Backfill
63,300m3
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