This paper presents a framework for application of modelling tools in an integrated approach to deal with the probabilistic manner of deterioration processes. The framework will assist industry towards implementation of integrated asset management approaches by addressing research and practical challenges such as (1) which assets should be inspected with high priority? and (2) how decision support models can be used to provide important information for various levels of asset management. The framework is applied to a case study relating to asset management of sewers and manholes. A preliminary result of statistical analysis on sewer data of the case study is also presented.