B55, Severinsbrücke over the Rhine river

Year of completion

In progress

Type of intervention


Contracting authority

Stadt Köln



Type of structure

Road bridge

Construction material of superstructure

Concrete, steel

Total length

690,86 m

Type of structural system

Cable-stayed bridge

Span lengths

49,11m + 89,19m + 47,81m + 301,67m + 150,68m + 52,46m

Construction height

2,90 - 4,44 m

Construction width

30,70 m

Services Grassl

, verification analysis, economic efficiency calculation , feasibility studies