The Illinois Legislative Audit Commission's summary of the Auditor General's management audit (dated May 1998) to determine whether 1996 costs paid by the Illinois Dept. of Transportation for roadbuilding materials were comparable with costs paid by Indiana, Iowa, Kentucky, Missouri, Ohio, and Wisconsin. Includes the responses of the Dept. to the Auditor General's recommendations for changes in the Dept.'s procurement methods.
Life-cycle cost analysis (LCCA) is an engineering economic analysis tool useful in comparing the relative merit of competing pavement design alternatives. The Pennsylvania Department of Transportation shares their experience with LCCA.
This Interim Technical Bulletin recommends procedures for conducting Life-Cycle Cost Analysis (LCCA) of pavements, provides detailed procedures to determine work zone user costs, and introduces a probabilistic approach to account for the uncertainty associated with LCCA inputs.