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� <br /> � <br /> E�sting Conditions <br /> � <br /> � Street AreaslCond�tions <br /> The condition of a street will vary for a number of reasons: <br /> � • Surface candition (roughness, cracking, alligatoring) <br /> • Drainage (street pmfile/street cross-section/storm sewer/draintile) <br /> � • Street section (bituminous/gravel base thickness) <br /> • Subgrade soil (sand, clay, silt) <br /> � • Amoundtype of traff'ic <br /> • Age <br /> � • Maintenance (seal coadpatching) <br /> � All of the above items contribute to whether a street will be in poor, fair, or good condition. It is not <br /> � uncommon for streets in the same area, constructed at the same time, to vary in condition. This <br /> makes it difficult to develvp an efficient street rehabilitation program that will satisfy everyone. <br /> � However, most of the streets in Centerville do follow a general conditian rating. <br /> � Street Surface Evaluation <br /> Bonestroo performed a walking/driving survey inspection that covered 100°� of the surface of each <br /> � pavement section to determine the current condition of the pavement netwark. The pavement was <br /> rated using the widely accepted PASER (PAvement Surface Evaluation and Rating) System. The <br /> ' � methodology is based on a numeric rating system ranging fron� 10 for a newly surfaced street to 0 for <br /> a failed surface. The results of the pavement condition survey aze shown on Figure No. 3: From the <br /> I � ' n seal coatin . The <br /> ratings rt has been deternuned that the ma�onty of the streets are �n eed of g <br /> � pavement surface condition corresponds to the rankings which are presented on Figure No. 3 and <br /> sumrnarized in Table 4. <br /> � <br /> � <br /> � Centerville Pnvement Management Study 13 <br />