Cycle-pedestrian footbridge over the Oberhafen Canal

Completion of the main assembly and launching operations of the steel deck for the new cycle-pedestrian footbridge over the Oberhafen Canal in Hamburg!

This is a cycle-pedestrian footbridge with an overall length of 135 m, divided into three spans of 30 m, 75 m and 30 m. The total width of the deck structure is 7.30 m.

The structure consists of a painted S355W steel central box girder with a rectangular cross-section, 2,500 mm wide and with a variable height ranging from about 800 mm to 1,400 mm. The flanges of the box are made of steel plates stiffened by longitudinal trapezoidal ribs. Triangular-section cantilevers, tapered towards the ends, support the orthotropic deck plate stiffened by rectangular-section longitudinal ribs.

The deck is supported by inclined struts which, together with the piers, form Y-shaped frames with a box-section configuration. The connection between the deck and the abutment-beam is ensured by a stainless steel plate.

Steel Project Engineering, on behalf of MBB – Metallic Bridges of Belgium, developed the construction design and the erection design of this structure, which is particularly complex from both a static and geometric point of view, adopting an unusual lifting method due to the site constraints.

The deck was divided into 5 macro-segments (A, B, C, D, E): initially, the steel piers P1 and P2 and the temporary piers were installed, on which the external segments C and D were assembled. Meanwhile, the macro-segments A, B, and E were assembled in a dedicated area adjacent to the canal. Finally, over three consecutive days, segments A, B, and E were transported and erected using a floating crane. Particularly delicate was the erection of the closing segment E, for which suitable guiding and adjustment systems were provided.

We are proud to have contributed to a project that adds value to the city of Hamburg, the result of the synergy between our team and the partners involved (the firm FZ), whom we thank for their collaboration. We also thank MBB for the trust placed in us and for providing the photographic material.

Further photos and videos are available on MBB’s LinkedIn profile.

https://www.linkedin.com/posts/mbb-metallic-bridges-of-belgium-s-a_mbb-hambourg-allemagne-activity-