NCHRP 25‐25 Task 80 identifies and evaluates how state departments of transportation and other transportation agencies are utilizing social media and web‐based tools during the National Environmental Policy Act (NEPA) process, specifically in regards to public involvement. The research included an online survey and case study interviews to inform recommendations for implementing social media during the NEPA process. Although transportation agencies agree that social media has potential use for public outreach during the NEPA process, the survey revealed that agencies are waiting for proof of effectiveness and demonstration of utility to the NEPA process. These concerns demonstrate the need for suggested practices and training on how to use social media effectively for the NEPA process if the potential offered by these techniques is to be advanced. NCHRP 25‐25 Task 80 begins to fulfill that need by presenting four project case studies and a first edition of suggested practices guidance resource for NEPA project teams. The research also provides a compilation of information on the applicability of various social media platforms as public involvement tools for NEPA public outreach in the form of an online tools matrix.
