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L <br />City0, <br />Louisville <br />COLOR ADO =tiih;L <br />Memorandum I Department of Public Works <br />To: Mayor and City Council <br />CC: Malcolm Fleming, City Manager <br />From: Kurt I<owar, P.E., Director of Public Works and Utilities <br />Date: 5/8/2014 <br />Re: Pavement Condition Index and Impacts of Preventative Maintenance <br />Staff is providing a short reference document for City Council that explains how the <br />Pavement /Overall Condition Index relates to what can visibly be seen on street surfaces. <br />Understanding why a street is scored a certain way and having an understanding of what <br />various work being done accomplishes for the system score can be helpful during capital <br />improvement budgeting discussions. <br />A visual of some common distresses on our streets <br />The Pavement Condition Index uses varying distresses categorized by low, medium, or high <br />severity for each distress. The most common distresses found in Louisville and used for this <br />discussion are as follows (Please note these are not all distresses that can occur): <br />Low, Medium, and High Transverse Cracking <br />3 rnm <br />5m <br />Z, SHOLILDeR <br />Edge <br />Stripe <br />12 mm <br />4 mm <br />20 mm <br />Traffic <br />4 rn <br />Note: Rate entire crack at highest ievei <br />present tor 10% or more of total <br />crack tength <br />0 Distress type 6, Low severity <br />20 <br />