Guldborgsund Tunnel

Guldborgsund tunnel

Guldborgsund tunnel


Mette Elbæk Andersen

Project Director
T: +45 51 61 67 97

Morten de la Motte

Project owner
T: +4551616241
M: +4551616241
Søren Christian Nielsen

Søren Christian Nielsen

Project Engineer
T: +45 51618809

The Guldborgsund Tunnel is an Immersed Tunnel connecting the islands of Lolland and Falster in southern Denmark. The tunnel was built between 1985-1988 and consists of two tubes, each carrying two lanes of highway traffic.

The immersed tunnel is constructed of two 230 m long tunnel elements that are cast together in the middle forming one monolithic structure of 460 m. Due to differential settlements between the portal structure and the immersed tunnel itself, the Omega Seal in either end of the tunnel have been exposed to large shear forces. In order to ensure the water tightness, Ramboll has design a secondary construction between the tunnel and the portal accommodating a second Omega Seal. Due to the size of the monolith and potential for continued settlement the new omega joint has been designed to accommodate rather large movements.

The project includes a number of complexities;

  • Ensuring water tightness of the console cast onto the existing structure.
  • Fixation of the new Omega Seal.
  • Altering the geometry of the portal structure around the existing Omega Seal.

Ramboll was engaged to develop the detailed design and tender documentation for the new watertight joint followed by site supervision.


First Floor, Emerald Building
Oud Metha Road
PO Box 116921, Dubai, UAE
Tel:+971 4 334 3616
Fax:+971 4 334 3617


Other sites

Other sites