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Norra Länken road tunnel

Sweden

Norra Länken ("The Northern Link") is an urban motorway in Stockholm. It forms the northern section of the orbital motorway around the Swedish capital ('Stockholms ringled') and is part of European route E4. For construction of tunnel NL51 on Norra Länken, Doka supplied a tunnel slab traveller assembled from SL-1 components, and a 'mounted-ahead' wall formwork consisting of Top50 elements.

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Project data

Year of completion
2011
Project duration
12 Months
Country
Sweden
Address
Stockholm
Town or city
Stockholm
Contractors
Joint Venture H. O. T. Hochtief / Oden / Tunneling
Structure
Tunnel
Type of structure
Cut-and-cover tunnel
Construction method
Segmented (non-monolithic)
Cross-sectional shape
Rectangular
Clear width
10.70 m
Clear height
8.20 m
Formed length of tunnel
190 m
Length of concreting section
12.50 m
Number of casting sections
16