03/13/2017 City Council Agenda - Laserfiche WebLink

Home Browse Search

PAVEMENT MANAGEMENT SYSTEM A Pavement Management System (PMS) performs analysis of collected rating data and reports on the current and projected conditions of the street system. In addition, it is used to evaluate the effectiveness of planning and funding priorities, and provides guidance in the decision making process. The goal of the decision making process is to prevent pavement failures through judicious maintenance. City of Eugene implemented MicroPaver in 2013. MicroPaver combines visual field inspection ratings, compiled under strict criteria, with computer tracking and condition analysis. Beginning in 2010 the rating methodology was revised to the WDOT's Extended (WSEXT) method, collection of deterioration values by area, lineal footage thus keeping the program consistent with industry standards. This also allowed for smoother transition to MicroPaver with the ability to migrate three years of rating data with some modifications. With this migrated condition data, rating the entire asphalt street system the last three years plus construction history we are able to perform an analysis with rational accuracy to report financial needs and road conditions. There will be some variation in the outcomes of the analysis due to slight differences in rating and calculation methodology but overall the data is consistent. Pavement Inspection Frequency Two predominant work efforts required to maintain the PMS are updating the street inventory and performing the annual inspection of surface conditions. City streets are divided into segments based on their Functional Classification (FC), pavement type, and geometric design. Segments are the basic unit for evaluating streets and surface conditions. A segment is defined as a portion of a street with a beginning and ending description. Changes in geometric features are used as a guide for determining segments. Examples of geometric differences are surface type, segment width, surface age, and extent of past rehabilitations. Field inspections are conducted by pavement raters who walk each individual street segment evaluating the pavement surface for signs of distress. City arterial and collector streets are inspected annually; residential streets inspections are completed in a three-year cycle; and off- street shared -use path inspections are completed in a two-year cycle. Staff performed inspections on the entire street system using MicroPaver for the first three years after implementation 2013-2015. Inspection data was evaluated for accuracy with the assistance from an outside consultant in 2014. It was determined that three years of street inspection provided an accurate baseline in MicroPaver for analysis. In 2015 staff completed inspections of shared -use paths. In 2016, staff returned to the standard inspection cycle inspecting arterial and collector streets plus two residential areas, South Hills and Coburg. Staff managed to inspect all concrete residential streets as well as alleys.