Two single track tunnels for the new high-speed railway track Köln-Rhein/Main (Deutsche Bahn AG) will run under the Autobahn 3 near Wallau.

Both tunnel portals will be open cut constructions, the tunnel between them of the closed coverage type. The tunnel tube on the Köln-Wiesbaden track has a length of about 800 m, the Wiesbaden-Köln tunnel of about 992 m.

ARCADIS services:

• Check of final design and execution
• Check of measurement program (leveling, extensometer and inklinometer measurements)