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The Inter-American Highway (IAH) is the Central American section of the Pan-American Highway and spans 5,470 kilometers (3,400 mi) between Nuevo Laredo, Mexico, and Panama City, Panama. History [ edit ]
As of 2022, about one quarter of all vehicle miles driven in the country used the Interstate Highway System, [6] which has a total length of 48,890 miles (78,680 km). [2] In 2022 and 2023, the number of fatalities on the Interstate Highway System amounted to more than 5,000 people annually, with nearly 5,600 fatalities in 2022. [7]
The National Highway System, which includes but is not limited to the Trans-Canada Highway, is the country's only official inter-provincial highway system. However, several Canadian highways are a natural extension of several key American highways that reach the Canada–US border.
With an original authorization of $25 billion (equivalent to $215 billion in 2023) [1] for the construction of 41,000 miles (66,000 km) of the Interstate Highway System over a 10-year period, it was the largest public works project in American history through that time. [2]
President Franklin D. Roosevelt saw highways as both essential to national defense and the economy, as well as a means of putting unemployed people to work. On April 14, 1941, Roosevelt appointed a National Interregional Highway Committee to study the need for a limited system of national inter-state highways. [1]
The system, as of 2010, has a total length of 47,182 miles (75,932 km), [25] making it the world's second longest after China's, and the largest public works project in US history. [26] The Interstate system joined an existing National Highway System, a designation created for the legacy highway network in 1995, comprising 160,000 miles ...
Construction of the U.S. Interstate Highway System tore through the nation's urban areas with freeways that, through intention and indifference, carved up Black communities The racist history of ...
A map of the Strategic Highway Network, one component of the NHS Map of average freight truck traffic on the NHS in 2015. According to the Federal Highway Administration, the 160,000-mile (260,000 km) National Highway System includes roads important to the United States' economy, defense, and mobility, from one or more of the following road networks (specific routes may be part of more than ...