FHWA’s INVEST identifies characteristics of sustainable highways and provides information and techniques to help agencies and organizations integrate sustainability best practices into highway and other roadway projects. The tool is intended to provide a method for practitioners to evaluate their transportation projects and to encourage progress in the sustainability arena. Called the “Infrastructure Voluntary Evaluation Sustainability Tool,” INVEST is a practical, web-based collection of best practices. It is not required and it is not intended to encourage comparisons across transportation agencies and projects. The tool has been developed with ongoing input from State and local transportation agency officials and staff and professional organizations such as AASHTO and ASCE. FHWA plans to continue to update this tool as the transportation sustainability field advances.