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Institute for Sustainable Infrastructure

The Institute for Sustainable Infrastructure (ISI) is an independent non-profit organization tasked with developing and administering a sustainability rating system for North American infrastructure. The organization was founded by the American Council of Engineering Companies (ACEC), the American Public Works Association (APWA) and ASCE.

The ISI rating system is founded on the “triple bottom line” concept of sustainability, which includes environmental, economic and social considerations, and it is designed to identify the benefits of sustainable practice for owners, regulators and practitioners. It represents the only comprehensive assessment system that strives to improve a project’s social and environmental performance, while also accounting for economic benefits and creating a better long-term value for the community.

The rating system will be formally launched in the summer of 2011 for public comment. A voluntary, web-based product will be launched in early 2012. Unlike other systems, the ISI system will include an option for third-party verification, and will be applicable to a wide range of infrastructure projects, from roads and bridges to energy and water systems. Its robust, objective and transparent methods will also promote community and policy acceptance of sustainable solutions and encourage knowledge sharing, innovation and collaboration in the design, construction and maintenance of infrastructure.

Learn more about ISI  

Learn more about the sustainability rating system