A key stage in infrastructure project development is contracting for the implementation of project works (e.g., construction, operation and maintenance), consulting services (e.g., design related studies, supervision of project construction, etc.), and purchase of goods (e.g., equipment). Contracting includes the development of contractor biding documents (terms of reference, technical specifications, contract, etc.), selection of contractor/consultant, and contract management. Environmental, social and health and safety management and sustainability criteria should be specifically considered as part of the project contracting, including the project design, construction, supervision, and operation and maintenance contracts. The bid and contract should establish the specific requirements, and can include how a contractor will implement sustainability measures, including equipment and technologies, and measure and report on implementation. For example, this could include adding to the project feasibility or design terms of reference specific actions or requirements to increase environmental sustainability, or adding to the project’s Environmental and Social Assessment and Management Plan measures to help reduce potential negative impacts/risks and increase environmental sustainability and project benefits.