The Federal Highway Administration’s (FHWA) Research and Technology (R&T) Evaluation Program seeks to assess and communicate the benefits of FHWA’s R&T efforts, ensure that the organization is expending public resources efficiently and effectively, and build evidence to shape and improve policy making. FHWA partners with State transportation departments, local agencies, industries, and academia to conduct research on issues of national significance and accelerate adoption and deployment of promising research products.

This report examines how FHWA’s investment in eNEPA, an electronic tool supporting interagency collaboration, affected interagency collaboration in developing environmental documents and the time it takes to conduct environmental reviews for major projects under the National Environmental Policy Act (NEPA).(1,2) This report should be of interest to the practitioners and decisionmakers involved in the development and review of environmental documents under NEPA.