National Highway System (United States) - Wikipedia
The Complex History of the U.S. Interstate Highway System
U.S. highway expansions increase traffic and pollution, environmental groups say | Reuters
The 10 most dangerous roads in the U.S.
U.S. highway conditions deteriorating, in some states more than others - Transportation Today
RESTORING THE INTERSTATE HIGHWAY SYSTEM:
The Best and Worst Highways in America
The world's longest highways
Interstate highway system safety features save 'thousands of lives annually': report | 2021-07-19 | Safety+Health
:format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/44418360/6171216582_6df86d27bd_b.0.0.jpg "Before-and-after maps show how freeways transformed America's cities - Vox")
Before-and-after maps show how freeways transformed America's cities - Vox
The U.S. INTERSTATE HIGHWAY SYSTEM Explained - YouTube
Worst U.S. highway conditions: Where does New York rank? - silive.com
What Are the Differences Between a Highway, Freeway, and Interstate?
The longest road in America runs through 12 states – The Hill
Highways to the horizon: A 10,000-mile road trip around the US - CNET
US interstate highways need overhaul, says new report
Could the US highways that split communities on racial lines finally fall? | US domestic policy | The Guardian
How Do Highways Get Their Numbers? - The News Wheel
U.S. highways could be paved with gold - MarketWatch
Remote Roads in America Where You Won't See Another Car
These Are the Most Dangerous Highways in the United States
7 of the best interstate travel routes in the US | Real Word
The Math Inside the US Highway System – BetterExplained
Longest Interstate Highways in the United States - WorldAtlas
The Math Inside the US Highway System – BetterExplained
Interstate Highway | U.S. Climate Resilience Toolkit
