The U.S. Department of Transportation (DOT) is issuing this revised guidance to address the application of categorical exclusions (CE) for multimodal projects under 49 U.S.C. 304. Under certain conditions, 49 U.S.C. 304 allows one DOT Operating Administration or Secretarial office (collectively referred to as “OA”) to apply the CE of another OA for multimodal projects. DOT is updating this guidance because section 1310 of the Fixing America’s Surface Transportation Act (FAST Act) amended 49 U.S.C. 304. This guidance is effective immediately. DOT expects this multimodal CE process to be used primarily for individual projects, although the statute provides the flexibility to apply it to a group or a program of multimodal projects.