IGA 2003 Rostock - North Bridge

The North Bridge is one of the few already existing three-span stress-ribbon bridges. The extraordinary transparency of this bridge across a flood plain is a result of the low construction height. The stress-ribbons of micro-alloy structural steel are anchored in concrete abutments founded on injection drilled piles. Hinges supports are used as intermediate support, equipped with a blade spring each as flexible saddle. For the slab 12 cm thick prefabricated concrete elements are bolted onto the stress-ribbons. The tubular steel railing with mesh wire effectively assists in the vibration-dampening without impairing the structure's transparency. The weight of the pavement's concrete slabs and the shallow rise of the stress-ribbons provide the stability for the bridge.