The Institute for Sustainable Infrastructure (ISI) is a

501(c)(3) A 501(c)(3) organization is a United States corporation, trust, unincorporated association or other type of organization exempt from federal income tax under section 501(c)(3) of Title 26 of the United States Code. It is one of the 29 types of 50 ...

non-profit organization founded by the American Public Works Association (APWA), the American Society of Civil Engineers (ASCE), and the

American Council of Engineering Companies The American Council of Engineering Companies (ACEC) is the oldest and largest business association of engineering companies. It is organized as a federation of 52 state and regional councils with national headquarters in Washington, D.C., compris ...

(ACEC) in 2010, and operates under their oversight. The organization was created to develop and maintain a sustainability rating system for all civil infrastructure.

Envision rating system

ISI maintains and administers the Envision Rating System for infrastructure projects. The rating system is published freely online, but there is a cost associated with requesting a third-party review of a project to receive "verification."

References

{{US-org-stub Non-profit organizations based in the United States 2010 establishments in the United States