Bridge-deck systems on concrete bridges are complex systems which have to meet many requirements. Such systems must act as a protective layer against water and de-icing salt as well as withstand temperature fluctuations and traffic loads which are worsened by the channelling of traffic on bridges into narrower lanes. The research packaged had the following research aims: to evaluate and rank testing methods for assessing structural resistance on several bridge-deck systems; to identify deformation-prone layers or materials; to develop a procedure to give information on the long-term behaviour of the bonding between sealing and concrete. Several bridge deck systems with different sealing products (waterproofing material PU, and PMMA as well as polymer modified bituminous waterproofing membrane) on different concrete subbases (different void content and surface treatment) were tested by different test methods, such as rutting test with the Model Mobile Load Simulator MMLS3, cyclic compression test, dynamic shear test and dynamic tensile test. The results will be presented and discussed.