The Institute for Sustainable Infrastructure (ISI) is dedicated to enhancing sustainable civil infrastructure through the innovative Envision sustainability framework. By providing education, training, and third-party project verification, ISI empowers communities to develop infrastructure that is not only resilient but also equitable. The Envision framework facilitates systemic change in civil projects, promoting environmentally friendly practices across various sectors, including transportation, water and wastewater, energy, and environmental management.

With over 10,400 certified Envision Sustainability Professionals (ENV SPs) and a cumulative project value exceeding $291 billion, ISI stands at the forefront of sustainable infrastructure advancement. Their services include credentialing professionals, offering technical assistance, and hosting events to share best practices. ISI also maintains a directory of verified projects, ensuring transparency and recognition for high-performance designs. Through its commitment to education and innovation, ISI is transforming infrastructure projects, driving communities toward a sustainable future, and encouraging responsible stewardship of resources.