The Weser Tunnel crosses the river Weser in northwestern Germany between the villages of Rodenkirchen and Dedesdorf, offering a connection between the cities of Nordenham and Bremerhaven on a regional level.
It was built from 1998 to 2004 and connects the districts of Wesermarsch and Cuxhaven by means of the B 437, providing easy access to the A 27 motorway and the B 212.