Elbe crossing
First opportunity to cross the Elbe west of Hamburg
5.7
km of tunnel length
This will make it the longest underwater tunnel in Germany.
Important section: Elbe tunnel to relieve congestion on the A7 motorway
As the western continuation of the Lübeck–Szczecin Baltic motorway, the A20 will form an important east–west link in the north and connect the German seaports on the North and Baltic Seas as a hinterland connection.
- Because there is currently no Elbe crossing west of Hamburg, the new Elbe tunnel will considerably relieve the A7 motorway. The “A20 Elbe crossing” begins on the Lower Saxony side in the area of the future A 20/A 22/A 26 motorway junction or the K28 junction south of Drochtersen and ends on the Schleswig-Holstein side before the A 20/B 431 connection point north of Kollmar
- The construction section will be a twin-tube shield tunnel with an internal diameter of 12.20 m. With a total length of 6.5 km (including entrance and exit trough areas), the Elbe crossing will be the longest underwater tunnel in Germany
Site
Between Hamburg and Cuxhaven, Germany
Building contractor/client
Deutsche Autobahngesellschaft mbH
Planning period
2021–2022
Service areas
Object planning for civil engineering structures for tunnels and bridges, structural engineering for tunnels and bridges, object planning for traffic facilities – water management, technical equipment (RIFT operating technology, traffic engineering), construction phase planning, overall BIM coordination and planning
Construction
probably until 2032
Total length
8.6 km
Underwater tunnel
5.7 km
