Integration of cross asset risk assessment into road infrastructure asset management

The CEDR-project "X-ARA - Cross-Asset-Risk-Assessment" aims at the development of a comprehensive risk assessment framework for the network level assessment of asset risks and impacts. Based on asset-specific risk assessment (pavements, structures, drainage, etc.) a procedure for the transformation and accumulation of these risks onto network level is an essential part of the project. X-ARA will enable a road administration to execute a risk-based assessment and comparison of different maintenance strategies on network level, and then "overlay" the effects of broad influencing factors to assess "what if" outcomes. In considering a "bottom-up" approach (from object level to network-level) the risk can be calculated and finally cumulated by using asset-specific information, which are available for most of the European road administrations.