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A first blast in Södermalm

A milestone has been passed in the work of extending the Stockholm Metro. The first blast in Södermalm marks the start for the extension straight under the water in the Saltsjön bay.

The blasting took place at the Londonviadukten. It is the start of the work on tunnels, that are 1,250 meters long, that will reach down to the future Sofia Metro station, 100 meters below the Stigbergsparken. The station will become, not only the deepest in the entire Stockholm Metro network, but also one of the world's deepest Metro stations.

One arm of the work tunnel will end approximately 80 meters below the Fotografiska museum. And fom there, two rail tunnels as well as a service tunnel will extend north under the Saltsjön to Kungsträdgården. The tracks will divide southwards to a new station under Hammarby Kanal, towards Nacka and Gullmarsplan.

In roughly about a year and a half, the work tunnel will be finished and work on the station's rock spaces and the rail tunnels will start.

– We have now reached a milestone that a lot of people have worked towards for six years. Now, with construction of the first work tunnel underway, we are building for real. The traffic is scheduled to start in 2030, says project manager Andreas Burghauser.

Andreas Burghauser

Preparatory work is also being carried out in Stigbergsparken during this year and in 2021 work will begin on the 100 meter deep elevator shaft down to the Sofia station.
This year, work on work tunnels will also kick off in eight different locations for the extension of the Blue Line to Nacka and Söderort.

Future scenario of Sofia Metro station

Watch the first blast: