The Kornwederzand and Breezanddijk traffic viaducts are part of the iconic Afsluitdijk, which is a 32-kilometer-long water barrier that is currently undergoing extensive renovation and reinforcement to continue to protect the Netherlands from flooding in the future.
As part of Afsluitdijk, we carefully assessed the structural safety of the existing Breezanddijk and Kornwerderzand traffic viaducts, which span the A7. This assessment took place according to the standards for “Reconstruction” as described in the RBK1.1 (Engineering Design Guidelines), supplemented by the project- and object-specific requirements. In the case of the Breezanddijk viaduct, we reinforced the substructure with additional concrete and drilled-in reinforcement to ensure that it could withstand collision impacts.
The superstructure (the bridge decks) was tested against the requirements for “future-proof use” with a residual lifespan to 2050. The substructure (the intermediate supports) was also tested for the ‘collision’ strain situation. This means they have been recalculated to meet contemporary traffic loads to guarantee structural safety.
SBE provided project management for the recalculation of the Kornwerderzand and Breezanddijk viaducts.
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