Lifetime Performance, Risk and Sustainability of Bridges
- Publication no: ABC-IAM104-14
- Published: 22 October 2014
Infrastructure transportation systems play an important role in the sustained economic growth and social development of most countries. Bridges are key components in such systems. During their service life, bridges are subjected to progressive and/or sudden performance deterioration. Planning bridge lifetime management actions under various budgetary constraints and safety, risk, and sustainability requirements represents an essential and challenging process. This can only be achieved through an integrated optimum bridge life-cycle management framework accounting for uncertainties and various objectives and constraints. This keynote paper highlights the proper methodologies for integrating bridge performance, risk, and sustainability concepts into the life-cycle optimization framework. The probabilistic evaluation of bridge performance at the system- and network-level and its integration in multi-criteria life-cycle optimization is discussed. The quantification of economic, social, and environmental sustainability metrics and their use for risk-informed optimal decision-making is also presented.