The Southern Link connects the southern parts of Stockholm, relieving the pressure of local traffic in the city centre. The link consists of over six kilometres of six-lane highway running through the southern suburbs and involves building 16.6 km of rock tunnels making it the largest highway tunnel project in Sweden.
WSP provided the feasibility study and detailed design for the eastern part, including highway design, landscaping, land surveying and mapping. WSP undertook the geotechnical and rock mechanical investigations and were responsible for project management and providing technical support to all project managers.
WSP were also commissioned to lead the soil decontamination work and water treatment. WSP designed the traffic system and highway control system – both in the Southern Link and surrounding areas.