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PAVEMENT INSPECTION FREQUENCY <br />'' Annualfield inspections are performed on all the City's arterial (FC-1 & FC-2) and collector streets <br />(FC-3 & FC-4). Field inspections are performed on one-third of the local streets (FC-5) each year, <br />which generally places all locals (FC-5) on a three year inspection cycle. <br />OVERALL CONDITION INDEX (OCI) <br />The extent and severity of pavement distresses are rated and assigned numerical values (deduct <br />values). All deduct values for observed distresses are summed and then subtracted from the base <br />value of 100. The final value, designated as the overall condition index (OCIJ, indicates the surface <br />condition of a street segment. A street with an OCI of 100 represents a new or recently rehabilitated <br />street. When the condition of a surface begins to deteriorate, the OCI decreases, reflecting surface <br />deterioration. This OCI value is the basis used to analyze the surface treatment needs of the <br />individual segments. <br />The following graph identifies the trigger points for each treatment based on Functional class. <br />Page 4 <br />