Renewing The National Commitment To The Interstate Highway System

TRB Special Report 329: Renewing the National Commitment to the Interstate Highway System: A Foundation for the Future explores pending and future federal investment and policy decisions concerning the federal Interstate Highway System. The report of the study committee suggests a path forward to meet the growing and shifting demands of the 21st century. The prospect of an aging and worn Interstate System that operates unreliably is concerning in the face of a vehicle fleet that continues to transform as the 21st century progresses and the vulnerabilities due to climate change place new demands on the country’s transportation infrastructure. View the videos, recorded webcast, graphics, summary booklet, press release, and highlights page at interstate.trb.org.