Purpose: Many road authorities considered contracting out road maintenance to the private sector based on performance measures as an alternative and better solution than traditional methods of contracting. It highlights issues of interest to road authorities in the context of saving maintenance costs and managing contracting times effectively. This method is named as performance based maintenance by contracting (PBMC) and has substantial success records in minimizing infrastructure maintenance costs in many developed and developing countries over the last two decades. It has received the attention of researchers and practitioners. However, the literature on PBMC is reasonably high although the concept of PBMC is relatively new. The purpose of this paper is to carry out a comprehensive state of the art review of the literature that has been conducted in the recent years.Design/methodology/approach: A total of 62 published report and journal articles related to performance based maintenance by contracting for road network system has been analysed and reviewed in this paper.Findings: This paper analyses the literature on PBMC and presents examples of developed and developing countries that have been successfully maintaining their road network systems using PBMC as their preferred method of contracting.Practical implications: The potential of reducing maintenance costs, increasing the quality of works and reducing the chance of corruption in the long run in developing countries are the challenging issues for PBMC, which needs more attention. This paper can be used as a base or platform for future research in the area of PBMC such as developing optimal policies and cost models.Originality/value: This paper would be useful for the research on PBMC. It would be beneficial for the engineers or professionals in improving the performance of road maintenance and management.

The January 2011 flood in Queensland caused severe damage to road infrastructures, which presented new challenges for the efficient management of the roads. To date, no deterioration model can accurately predict the impact of floods on pavements. To understand the impact of the January 2011 flood on the structural performance of flood-affected pavements, falling weight deflectometer (FWD) deflection data on flood-affected roads managed by the Brisbane City Council (BCC) and Roads and Maritime Services, New South Wales (RMS, NSW), Australia, were collected and examined. This paper proposes a deterministic model that expresses structural strength of pavements as a function of time. The model predicts the short-term behavior of a flexible pavement immediately after flooding. A comparison of before- and after-flood data, and flooded and nonflooded sections of the same road, indicates a consistent trend of decrease in strength due to its sustained submergence under flood water. The literature review in...

The aim of this paper was to investigate the impact of recent flooding events on the structural and surface condition (such as roughness and rutting) of the pavements of the Department of Transport and Main Roads, Queensland, and the Brisbane City Council. The paper also reviewed the major flooding and cyclone events that occurred in the last six years in Queensland. Generally, a rapid increase in deterioration of the structural and surface conditions such as roughness and rutting was observed in pavements after the flood as a result of the inundation. An increasing need for road rehabilitation was also observed after the recent flooding events from 2010 to 2015 in Queensland. Assessing the rapid deterioration of the structural and surface condition of the flood affected pavements is a prerequisite for the accurate prediction of pavement performance, a better decision making process and the management of these roads. Although this paper did not include any model for roughness and rutting, deterioration models for roughness and rutting of flood affected pavements are currently being developed as a part of the future scope of this research

In recent years, flooding has caused disruptions to road management by significantly increasing rehabilitation costs. To date, there is very limited literature addressing the rapid deterioration of pavements immediately after a flooding event. This paper presents a state-of-the-art review of the literature on assessment and modeling deterioration of flood-affected pavements. Twenty peer-reviewed journal articles and conference papers and nine published reports are reviewed. Very few studies have attempted to incorporate flooding events on pavement condition. The critical review of the literature discusses the contributions and limitations in the assessment of flood-affected pavements to date. It also discusses the research conducted on the development of new deterioration models specifically for flood-affected pavements and the importance of developing such models for the road management system. Because there is no deterioration models for rutting and roughness of flood-affected pavements, this paper also presents two mechanistic-empirical deterministic based models for deterioration of rutting and roughness of flood-affected pavements. These models are sufficient to be used by other road agencies after calibrating for local road conditions. The outcomes of this paper will guide future research and help to understand the impact of flooding events on rapid deterioration of pavements. The newly developed deterioration models will help road agencies make effective decisions for the rehabilitation and management of flood-affected pavements.