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Steep tunnel
This second tunnel measures 445m in length. After its lower entrance near the river Inn, it slightls descends passing under the national road, then sharply turns upwards.

During construction, the tunnel collapsed twice near its upper exit.


2006.04.07
Steep tunnel : 2006.04.07




...and a year later.
Steep tunnel : ...and a year later.




The patron Saint Barbara, protector of tunnel workers all over the world.
Steep tunnel : The patron Saint Barbara, protector of tunnel workers all over the world.




Water sediment cleaning bassin.
Steep tunnel : Water sediment cleaning bassin.




Shine
Steep tunnel : Shine




A worker involved in finishing the tunnel shell
Steep tunnel : A worker involved in finishing the tunnel shell




Temporarely wall infrastructures
Steep tunnel : Temporarely wall infrastructures




Half way
Steep tunnel : Half way

At this point, the tunnel widens up for the short double track section where both vehicles cross each other.






Red and colorless lights
Steep tunnel : Red and colorless lights




The deepest point of the tunnel. From here on, the line climbs uphill
Steep tunnel : The deepest point of the tunnel. From here on, the line climbs uphill




Life systems
Steep tunnel : Life systems




As the tunnel climbs steeper: View back downto the deepest point of the line.
Steep tunnel : As the tunnel climbs steeper: View back downto the deepest point of the line.




Towards the upper exit.
Steep tunnel : Towards the upper exit.




Sealing the PVC
Steep tunnel : Sealing the PVC




Applying the steel grid. Later, fluid concrete will be sprayed on it.
Steep tunnel : Applying the steel grid. Later, fluid concrete will be sprayed on it.




Workers having a break
Steep tunnel : Workers having a break

Experienced tunnel workforce, they also were engaged on the construction site of the swiss St.Gotthard base tunnel.






2
Steep tunnel : 2



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