Competition 1996 – 1st Prize
Design Volkwin Marg and Jörg Schlaich
Project management Giorgio Gullotta
Design team Stephanie Joebsch, Marc Ziemons
Project team Klaus Reinhardt, Birgit Föllmer, Anne-Kathrin Rose, Tomasz Polakowski, Markus Carlsen
Structural engineers schlaich bergermann und partner, Stuttgart
Project management Thorsten Helbig, Sven Plieningen
Technical equipment SIAT, Munich
Project management Frank Zabel
Sponsor PREUSSAG AG, Hannover
Client EXPO 2000 Hanover GmbH und Deutsche Messe AG
Constuction period 1998–2000
Bridge center length 127.5 m, width 30.0 m
Bridge east length 90.0 m, width 15.0 m
Bridge north-east length 142.5 m, width 15.0 m
Bridge south length 90.0 m, width 7.5 m
The world exhibition (EXPO) site was traversed by two external roads. These formed barriers to be overcome by a large number of visitors, therefore making the construction of pedestrian bridges necessary at four different locations. The marking of the entrances and passageways used the metaphor of the welcoming guard of honour: High poles (steles) are passed through like forests of masts. Towards their top they seem to dematerialize due to a 1.5 m long shining glass cylinder. At dusk these pole guards of honour change into light steles. For the bridges a forest of masts functions like the poles of raised dwellings on stilts. The poles carry footbridges reminiscent of lakeside landing stages; all of a sudden they turn into bridges.
In order to flexibly react to different situations, the bridge con-struction allows for various demands regarding length and width, conversion or disassembly without change of the overall appearance.
The poles as part of the mast of forests and the suspension from diagonals as well as top and bottom flanges form the primary load-bearing system. The modular filling elements are inserted into this load-bearing system. The columns are spanned on conical foundations at a grid of 7.5 m square. If this grid meets roads or paths to be crossed, the columns are "suspended" respectively integrated into a guyed structural framework.