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PAVEMENT MANAGEMENT SYSTEM <br />Effective evaluation of planning and funding priorities necessitate that local jurisdictions <br />manage their transportation infrastructure with some form of pavement management system. <br />Generally, the PMS provides guidance in the decision making process and is designed to <br />prevent pavement failures through judicious maintenance. The Pavement Management System <br />performs analysis and reports on the current and projected condition of the pavement surface. <br />The system is dependent on the annual condition inspections/surveys that are conducted. <br />The PMS used by the City of Eugene since 1987 was developed b ~,~'asgton's League of <br />Cities and Washington County Roads Administration Board ( in conjunction with the <br />Washington Department of Transportation (WDOT). The P c 'nes visual field <br />inspection ratings, compiled under strict criteria, with an u ated ccuter tracking and <br />condition analysis program, called Centerline. Toget ~ se componc s of PMS document <br />current pavement condition and serviceability, and provide a basis for mod~i~g project <br />financial/condition trends. Eugene's PMS contains 19 years cif historical data ~d h the <br />ability to estimate financial needs and road conditior~s fcventy yeas into the futux: <br />Pavement Inspection Frequency <br />Two predominant work efforts required t~~ mai ruin the PMS a~~: t ing the street inventory <br />and performing the annual inspection of surlarc c~.n~i~ns. City ets are divided into <br />segments based on their Functional Classifti~~~~ ~f{'C )- ~~~me t type, and geometric design. <br />Segments are the basic valuating struts and surtiice conditions. A segment is defined <br />as a portion of a street 't a ning and ending description. Changes in geometric <br />features are used as wide for ~tnining segrrnts. Examples of geometric differences are <br />surface type, segment ~ridts, surface age, and e~: t~cx~ ~f past rehabilitations. <br />Annual field inspectio»s aee pcrrc~rmedmall the City's arterials and collector streets. Since <br />the rate ~of ck~~xi ~ lion r~ t' a l~castreet i~ tyfi~ally less than that seen on higher classification <br />streets, f~eld inspection ~~a~c pcrl~ ed on one third of the local streets each year which places <br />all loll streets on a three=;,ar ins ~ ~ cycle. Field inspection is conducted by pairs of <br />pav~mei~i~ters who walk ~ indi ual street segment evaluating the pavement for signs of <br />distress. Depancies bet n the ratings of the two pavement raters, or from the previous <br />years' ratings are reason for segment to be rated a second time to ensure a correct <br />evaluation. _ k <br />Overall Condition I x (OCI), Deduct Values, and Distresses <br />Pavement raters walk .streets evaluating the pavements for signs of distress. Distresses <br />occurring in streets are dependent on pavement type and are rated by extent and severity. <br />These values are logged on standard forms designed for the field surveys. Distresses occur in <br />many phases of deterioration; therefore, the predominate extent and severity is rated. The data <br />is then entered into Centerline. Numerical values (deduct values) are assigned to each <br />distress' extent and severity, all deduct values are summed and then subtracted from the base <br />value of 100 internally. The final value, designated as the overall condition index (OCI), <br />indicates the surface condition of a street segment. A street with an OCI. of 100 represents a <br />new. or recently rehabilitated street. As the condition of a street surface begins to deteriorate <br />6 <br />