Selection of a sustainable private partner (contractor) is significant to ensure the success of public-private partnership (PPP) projects. In recent years, multi-attribute reverse auctions (MARAs) are widely used in public procurement to select the desirable contractor. However, the MARA mechanism is neglected in the existing studies. The purpose of this paper is to present a MARA framework for selecting a sustainable contractor in PPP infrastructure projects, in which the MARA rules and an integrated winner determination method are involved. In particular, the sustainability considerations are incorporated in the MARA rules, which can make the potential contractors have incentives to improve their sustainable performance. Within the MARA rules, based on the trapezoidal fuzzy linguistic representation model and the classical two-additive Choquet (TAC) integral operator, a winner determination method is developed to evaluate and rank potential contractors, in which both the bid evaluation and the interrelationships among bid evaluation attributes are considered. Finally, the potential of the proposed method is shown through an illustrative case of a PPP project of a subway construction in China. The MARA framework investigated helps governments make reliable decisions in sustainable procurement and thereby facilitates successful project delivery.Sustainability 2018, 10, 4129 2 of 20 guarantees to attract social capital and to prevent competition between similar projects [12]. When the projects are going well, the vast majority of investors have the tendency to carry out opportunism in their pursuit of monopoly profits by increasing prices, such as charging more fees in sewage treatment or highway projects, which is an overall detrimental to public interest [13]. As another example, there is less compensation for multiple government-sponsored infrastructure projects with the aim to serve the public rather than profit such as with a subway in Singapore [13], which results in investors facing the risk of high inputs with low returns. Consequently, investors may have no incentive or confidence to participate in the projects. Such PPP infrastructure projects have the potential risk of failure incurred by private investors Selecting the right partner is considered as a solution to ensure the success of the PPP projects from the origin [14,15]. It is essential for public sector, hereinafter referred to as the government, to evaluate the potential private sector, hereinafter referred to as the contractor, in PPP infrastructure projects. In government procurement, infrastructure projects cannot be allocated solely to the cheapest contractor.The key parameters considered include, but are not limited to, the technical attributes, such as the quality of the materials and the workmanship; the business attributes, such as the creditworthiness and the experience of the potential contractors; and the sustainability attributes, such as the design and impact of the project on local communities and the environment, solid waste manag...