Motorway A7, 4th tube Elbe tunnel

Year of completion


Type of intervention

New construction

Contracting authority

Freie und Hansestadt Hamburg - BSU


Ramp south: open trough structure, width 14.50 - 32.00 m Tunnel north and south in open construction method: box frame with sectional coverage by operational building, width: approximately 14.00 m Central tunnel: tunnel frame with lining segments diameter > 12.25 m



Type of structure

Road tunnel

Construction method

Shield tunneling method

Total length

3.390,00 m

Construction width

14,20 m

Construction material

Reinforced concrete

Services Grassl

Basic assessment, preliminary design, detailed design, preparation of tendering, construction supervision

Services provided by engineering consortium