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Abstract: The immersed tunnel “Söderströmstunnel” located in Stockholm is under completion. The three tunnel elements were constructed with an outer steel shell, transported from Tallinn to Sweden on a barge. After offloading the steel shell, concrete was cast while still in a floating condition. This paper will describe the methods and challenges of the concrete casting...
Abstract: The Marieholm tunnel is a new immersed road tunnel in Gothenburg, Sweden. The immersed section is 500 m long with three traffic lanes in each direction. The challenge of the project is construction in the city with limited space and difficult transport logistics. Down streams an existing tunnel and a bridge limit transportation width and depth. Two bridges nearby will be constructed just before...