Abstract
Sustainability of infrastructure has been a source of concern for ages. A panoply of literature exists on sustainability. However, few studies exist which focus on the sustainable outcomes which an infrastructure investor seeks when deciding to invest in a project. The current study reviews extant literature to identify factors which are indicative of sustainability, specifically to an investor. Transportation literature is focused on because of its economic nature and potentiality of returns to an investor. Studies in both international and South African context are included. Findings revealed that adequacy of funding, accessibility, safety and security, quality, reliability, environmental friendliness and strong institutions are desirable outcomes to an investor. These findings will assist in the development of strategies to ensure that infrastructure projects are financially and economically sustainable.