Development of Work Breakdown Structure (WBS) – Based Quality Management System for Concrete Bridges Maintenance Works to Improve Maintenance Performance

Document Type : Regular Paper

Authors

1 Ph.D. Candidate, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia

2 Bachelor, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia

3 Professor, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia

4 Associate Professor, School of Property, Construction and Project Management, RMIT University, Australia

Abstract

The state of bridges in Indonesia is concerning, with only 1.2% of the 18,990 national bridges classified as being in good condition. A significant number of bridge failures stem from inadequate maintenance, highlighting the urgent need for a structured and effective quality management approach. This research develops a Work Breakdown Structure (WBS)-based Quality Management System (QMS) framework specifically for concrete bridge maintenance to enhance performance and ensure adherence to national standards. The QMS encompasses three main stages—inspection, maintenance, and rehabilitation—comprising 10 activities systematically aligned with bridge maintenance requirements. Quantitative findings from expert validation showed high suitability of the QMS framework, with average scores of 4.0 to 5.0 across content, format, and performance effectiveness. Statistical analysis with 33 respondents revealed a strong positive correlation (r = 0.768) between the QMS and key maintenance performance indicators such as structural safety and bridge importance, explaining 54.9% and 59.9% of the variance, respectively. Qualitative insights emphasized the enhanced organization and durability of maintenance processes, supported by 10 Standard Operating Procedures (SOPs), work instructions, and checklists. This study's novelty lies in integrating WBS into QMS for concrete bridge maintenance, providing a structured methodology for achieving consistent and high-quality outcomes. The implementation of this framework is anticipated to significantly improve the safety, reliability, and sustainability of bridge infrastructure in Indonesia.

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History

  • Receive Date: 23 October 2024
  • Revise Date: 26 November 2024
  • Accept Date: 14 January 2025

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