A cross-asset management for transportation infrastructure systems

Transportation infrastructure systems are pillars for society development and growth. The challenge of fund limitation, aging, and deteriorating infrastructure, and higher loading demand increase the mandate for implementing effective asset management to manage transportation infrastructure assets cost effectively at acceptable levels of service. Pavement and Bridge Management Systems have existed for several years. However, these systems are often operated separately. Agencies are faced with the challenge of fund allocation and the trade-off between assets. Therefore, there is a need for a decision support system that cost-effectively optimizes the trade-off between systems' components; for example, allocating funds for bridge rehabilitation or pavement rehabilitation while deferring the other. On the other hand, there is a unique advantage in cross-asset optimization in that cost saving can be generated through bundling of asset components by location for maintenance and rehabilitation. In essence, cross-asset management provides opportunities to reduce procurement cost, user delay, and interruption. This paper presents a cross-asset management methodology using hazard and survival model. A case study is presented to demonstrate the proposed methodology.