Dry-shod through new immersed tunnel - New Technology

Now you can go dry-shod through the new immersed tunnel in Mälaren in Stockholm. But it will take time until it opens for commuter trains.

Tunnel Riddarfjarden built by three steel elements is lowered and connected to each other underwater. New Technology has previously described the precision work to slowly bring down the approximately 100-meter-long steel skeletons.

Now, work has progressed so far that the parts have been connected with each other and with the connecting mountain tunnels on either side of the bay. Therefore invited Minister for Infrastructure Catharina Elmsäter-Sword and media representatives on a walk through the tunnel during Thursday morning.

It feels great to show off our immersed tunnel today, it is an important milestone in our efforts to get the City Line clear, said the Administration Project Manager Kjell-Åke Averstad during the show.

But there are still a lot of work with the tunnel before it will be ready next year. Now underway and rebar of the joints between the tunnel elements, as well as the casting of aggregate concrete inside the tunnel sections. Aggregates Concrete helps to weigh down the elements and will also serve as walkways for maintenance personnel.

While working to pull the tension cables to keep the tunnel in place. Overall it uses 40 mil wire in the 300-meter tunnel.

the summer of next year, the tunnel works to be finished. Then take instead work on the railway at, including the installation of signal systems and overhead lines.

Lower Tunnel is part of the City Line project, which involves building a new commuter rail tunnel under central Stockholm. Kjell-Åke Averstad told during the press preview of the blasts of Brisbane City Tunnel is almost finished and that the major installation work for the two new train stations will begin shortly. Work on railway facility will start soon.

-We are particularly happy to note that we follow the budget and that we are so good that we are able to take the City Line in operation earlier than planned, year-end 2016/2017, said Kjell-Åke Averstad during the press preview.