Institute for Sustainable Infrastructure

The Institute for Sustainable Infrastructure (ISI) is a 501 (c) (3) not-for-profit organization, structured to develop and maintain a sustainability rating system for civil infrastructure. That system, called Envision™, is a collaboration between ISI and the Zofnass Program for Sustainable Infrastructure at the Graduate School of Design at Harvard University.

ISI was co-founded by the American Public Works Association (APWA), the American Council of Engineering Companies (ACEC), and the American Society of Civil Engineers (ASCE). ISI is governed by a nine member Board of Directors, appointed by the founding organizations for three-year terms. A third of the board rotates each year.

Envision provides a holistic framework for evaluating and rating the community, environmental, and economic benefits of all types and sizes of infrastructure projects. It evaluates, grades, and gives recognition to infrastructure projects that use transformational, collaborative approaches to assess the sustainability indicators over the course of the project's life cycle.

To learn more about ISI and Envision please visit

The video below from the 2011 International Public Works Congress & Exposition features Vicki Vickrey Quiram, Commissioner of New Hampshire Department of Environmental Services, who continues the conversation about ISI and the Envision rating system.