Design Life

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Design Life The design life of the project, expressed in years. A typical value is 25 years for new or reconstruction projects or 10 years for resurfacing projects. The design life starts when the project construction is complete and the project is open to traffic. The design life is the period of time where the construction cost can be amortized. It is presumed that the project will be re-constructed at the end of its design life and there will be no salvage value. The design life is entered on the Project Information Worksheet. 

