U4, connection to HafenCity

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Year of completion


Type of intervention

New construction

Contracting authority

Hamburger Hochbahn AG



Type of structure

Railway tunnel

Construction method

Underground construction technique, shield tunneling method, sealing slab and slurry wall construction method

Total length

3.930,00 m

Construction width

6,25 m

Construction material

Precast concrete, reinforced concrete, shotcrete

Services Grassl

, health and safety coordination, consultant services for the client, feasibility studies