The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous …

U.S. Routes in the contiguous United States follow a grid pattern, in which odd-numbered routes run generally north to south and even-numbered routes run generally east to west, though three-digit …

Nov 25, 2025 · This video map above shows the numbered highway system in numerical order from Highway 1 all the way to Highway 730.

Nov 7, 2014 · Our highway system comprises three fundamental building blocks: local roads; collectors; and arterials. Local roads serve homes, businesses, farms, and small communities, and provide …

Mar 12, 2026 · Though highways existed in the United States before the creation of the Interstate Highway System, the passage of the Federal-Aid Highway Act of 1956 funded the construction of …

The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous …

Explore the U.S. Interstate Highway System's history, design, and smart infrastructure. Learn about its engineering marvels, modernization, and socio-economic impact.

May 27, 2010 · It took several years of wrangling, but a new Federal-Aid Highway Act passed in June 1956. The law authorized the construction of a 41,000-mile network of interstate highways that …

Funded by the federal government, Interstates connect U.S. states. Each state can determine the speed limit on Interstates crossing its territory, usually between 70 and 80 mph. Exits are numbered.

Jun 22, 2025 · The Interstate Highway System (IHS), officially the Dwight D. Eisenhower National System of Interstate and Defense Highways, is a 46,000-mile network of roads, bridges, and tunnels …