Sluiskiltunnel, Terneuzen, the Netherlands

The Province of Zeeland, the Netherlands is owner of the 1.5 km long, Sluiskiltunnel, located in the N62 highway, crossing the shipping channel between Terneuzen (the Netherlands) and Gent (Belgium). The tunnel is part of a project covering a 6 km long stretch of the N62.  It consists of a twin bored tunnel with each 2 lanes, with an control building above the western entrance, and connecting road network. As in-house BAM designer, Delta Marine Consultants was responsible for the overall design, managing and integrating the design for all project disciplines (incl. those by its sister company Wayss & Freytag Technical Department who has performed design activities for tunnel lining and associated works).

Scope of Work

The 2*2 lane road tunnel consists of 2 tubes of 1140 m bored length (crossing 3 rail lines and a busy shipping channel), connected to short  in-situ tunnels and tunnel approached (including a tunnel portal with integrated building at the west side).
Besides the tunnels and cross-passages, the design scope covered temporary works, road works, fly-overs,  architectural (buildings and portals), M&E and  software required for safe tunnel operation.

The tunnel has been fitted-out with the state-of-the art equipment and the Contractor has included 10 years maintenance in its scope.

Clever Solutions

Several technical improvements were developed, to reduce risks (like measures to uncouple the interaction between expanding clay layer and tension piles), to reduce CO2 (by using in house developed LEAB asphalt), to avoid delays (by creating and managing an overall BIM-model the 3D integration of civil-, electrical- and mechanical designs was achieved, with as a result minimal clashes and delays during construction and installation) and to improve user comfort for the motorists (by integrating special anti-sun screens at the tunnel portals).