ABSTRACT
In transportation facility service life cycle project evaluation, tradeoffs exist between design and repair service life cycles affected by repair treatments, between repair service life cycle and maintenance treatments, and between corrective and preventive maintenance treatments. To estimate the change in life-cycle agency costs, the activity profiles in the facility service life cycle containing details of frequency, timing, and magnitude of facility construction, repair, and maintenance work for primary transportation facilities such as pavements and bridges need to be established. The overall benefits of a transportation project in the facility service life cycle may be extracted from both the agency and user perspectives. When choosing a benefit-cost analysis method for project evaluation, tradeoffs must be considered between accuracy and simplicity of the method. The project-level facility life-cycle benefits in perpetuity can be quantified based on the base case and alternative life-cycle activity profiles. The ease or difficulty of real-world implementation is crucial in adopting project-level versus network-level evaluation.
