Scope of work
Sluiskil Canal Crossing
twin-bore road tunnel under the Ghent-Terneuzen Canal
Province of Zeeland [Provincie Zeeland]
represented by BV Kanaal-kruising Sluiskil
Wayss & Freytag Ingenieurbau AG
in a joint venture
October 2010 to May 2015
€ 233 millions
The Combinatie BAM TBI Joint Venture consisting of BAM Civiel bv, Wayss & Freytag Ingenieurbau AG, Mobilis B.V. and Croon Elektrotechniek B.V. has been contracted by the Province of Zeeland, represented by the special purpose company BV Kanaalkruising Sluiskil (BVKKS), to construct a new road tunnel underneath the Ghent-Terneuzen Canal. The region surrounding Terneuzen lies on the central axis between the import antharbour areas of the Netherlands in the north and of Flanders in the south.Terneuzen is undergoing extensive infrastructure upgrades (development of new industrial areas and widening of the canal). A major bottleneck in the region is National Road N61. It currently crosses the canal via a swing bridge, which is closed during shipping traffic.
In view of this situation and taking into consideration a future increasing traffic, a new road crossing in the form of a tunnel is required. The new road connection consists of two separate dual lane tunnels bored with one slurry shield TBM. The tunnels have a length of 1,150 m each, an external diameter of 11.32 m and are lined with 45 cm thick segments. The tunnel overburden is between 3 and 25 m. The tunnel drive begins in very soft ground conditions consisting of sand and silt. With increasing depth, the stiffness of ground increases. At its lowest point the tunnel will be bored through Boom Clay.
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