Pavement scores synthesis.

442931356Technical report, Nov. 2008-Jan. 2009PDFTech Reporthttp://ntl.bts.gov/lib/31000/31100/31127/0-6386-1.pdfFHWA/TX-09/0-6386-10-6386PavementsPavement management systemsPavement maintenancePavement distressTexasTexas Transportation InstitutePapagiannakis, AthanassiosGharaibeh, NasirWeissmann, JoseWimsatt, AndrewTexas Transportation InstituteTexas. Dept. of Transportation. Research and Technology Implementation OfficeUnited States. Federal Highway AdministrationNTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and PerformanceNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and MaintenanceUS Transportation CollectionThe purpose of this synthesis was to summarize the use of pavement scores by the states, including therating methods used, the score scales, and descriptions; if the scores are used for recommending pavementmaintenance and rehabilitation actions; how the scores are computed; the distresses that are used forgenerating the scores; the sampling method; the survey frequency; and each state agency\ue2\u20ac\u2122s legislative orinternal goal.The distresses considered and the way they are summarized into indices varies between states. Typically,the extent and severity is used for computing scores. In rating distresses, some agencies use the mostdominant distress present, while other use all the distresses present. For each distress type/severity level,criteria are established in terms of the distress index that indicates the need for rehabilitation. In addition,how the data analysis results are used varies from state to state. According to the information collected forthis synthesis, only three states indicated that they have goals set by, or reported to, their respectivelegislatures. Internal agency goals vary from state to state as well.Since the scores are computed differently for each state, and since the sampling methods vary from stateto state, the definition of good or better varies significantly between each state; therefore, direct comparisonsbetween scores or percent lane miles in good or better condition between states are not valid