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  • Verlängerung U4 - Östliche HafenCity Hamburg

U4, extension, eastern HafenCity

Year of completion


Type of intervention

New construction

Contracting authority

Hamburger Hochbahn AG



Type of structure

Railway tunnel

Construction method

Sealing slab and slurry wall construction method

Total length

920,00 m

Construction width

11,00 m

Construction material

Reinforced concrete

Services Grassl

Basic assessment, preliminary design, planning for approval, feasibility studies

Services provided by engineering consortium