Short description
The Steggja tunnel is 1 549 metre long. A breakdown bay must be blasted with an accompanying niche for a technical building. Trenches must be excavated on both side of the tunnel for electrical installations and a flushing water pipe with sand traps.
The Finnsås tunnel is 2 412 metre long. 2 breakdown bays must be blasted with accompanying niches for technical buildings. Trenches must be excavated on both side of the tunnel for electrical installations and a flushing water pipe with sand traps.
The Kolnos tunnel is 658 metre long. A breakdown bay must be blasted with an accompanying niche for technical building. Trenches must be excavated on both side of the tunnel for electrical installations and a flushing water pipe with sand traps.