Söderström Tunnel

Contact

Stephen Whitham

Stephen Whitham

Market Director, Tunnels
T: +45 5161 5202
Söderströmstunneln is an immersed tunnel for The Stockholm City Line (Citybanan) under the Söderström watercourse from Riddarholmen to Söder Mälarstrand.

The crossing comprises a 290 m long immersed tunnel section constructed of three elements of rectangular cross section for dual railway tracks and a service gallery in separate bores. The immersed tunnel is installed above the seabed on discrete foundations with bearings. At the Riddarholmen site a 100 m long cut and cover tunnel connects the rock tunnel under Riddarholmen with the north end of the immersed tunnel. At the Söder Mälarstrand site the immersed tunnel is connected directly to the rock tunnel via a short 20 m long cut and cover tunnel.

Ramboll provided the design tender design for the contractor. The design included the design of the whole immersed tunnel, the cut and cover tunnel, the rock tunnel under Riddarholmen, the connections between the tunnels, as well as the open excavations connected to the project. In addition, Ramboll is also providing the necessary services for the design of the temporary works at the site.

Ramboll

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

Mail: info@ramboll.ae

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