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US Routes Vs. Interstate: What's The Difference?

There are a number of different road designations in the United States, from highways and freeways to interstates and routes, and it can cause some confusion with different laws and regulations.
National Academies of Sciences%2c Engineering%2c and Medicine

U.S. Interstate Highways Need Overhaul; System Requires Significant Commitment for Federal and State Coordination and Funding, Says New Report

WASHINGTON – The future of the U.S. Interstate Highway System is threatened by a persistent and growing backlog of structural and operational deficiencies and by various looming challenges, such as ...