Decisions on road reconstruction and rehabilitation are based on a combination of engineering, economic, financial and social considerations. Rigorous analysis in support of such decisions is necessarily extremely complex. At an aggregate level, however, it is clear that the possession of an asset (such as a road network) whose components are subject to deterioration and have finite lives imposes a maintenance requirement if the quality and value of the asset is to be preserved.

• Pavement Age and the Future Need for Road Reconstruction
  

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