Currently, The City of Calgary utilizes the Municipal Pavement Management Application (MPMA), which was developed in the early 1980s by the province of Alberta. MPMA is used to assess the status of the pavement network, estimate the maintenance and rehabilitation needs of the network, and develop roadway rehabilitation programs based on user-defined budget constraints and Pavement Quality Index (PQI). Around 2003, The City saw the need to expand upon their network-based assessment activities with a project level evaluation process. This resulted in the development of a three-tiered approach. Tier 1 comprises a review of PMS data, possibly a windshield survey, typically resulting in standard approaches being applied to lower profile projects. For Tier 2 assessments, this effort is supplemented by a detailed visual condition survey and review of other available information. The subject of this paper is the Tier 3 Pavement Assessment program. In this case, available PMS information and a detailed visual condition surveys are supplemented by more in-depth evaluation. For a given project, this could include detailed traffic analysis, pavement thickness investigation using Road Radar, Falling Weight Deflectometer (FWD) structural assessment, and potentially, geotechnical investigation. The overall approach is considered to represent the state-of-the-practice for pavement evaluation. Over twenty Tier 3 evaluation projects have been completed to date. This paper will detail the assessment activities and process for development of rehabilitation strategies for two project-specific case studies where construction has been completed. For the covering abstract of this conference see ITRD number E220308.
Abstract