The United States is home to almost 2.8 million lane-miles, or about 4.6 million lane-kilometers, of paved roads. This astonishing figure, which shows just how much of the country is serviced by dedicated roads, is a testament to the growth and progress of the nation since the first roads were built. Roads are a cornerstone of the US’s infrastructure, providing essential pathways for transport and commerce, as well as an infrastructure backbone for communication networks such as electricity, internet, and satellite. Roads allow for the easy access of goods, people and materials to different locations, which helps to improve economic productivity and regional development. The construction of paved roads began in the late 19th century, and gradually increased as the 20th century progressed. As automobiles and trucks became more prevalent, the need for better roads increased, and over time, the US developed a system of interconnected highways, multiple lane roads, and interstates. Today, the majority of new road construction is focused on the maintenance and repair of existing roads, as well as the construction of new interchanges, bridges, and tunnels. These are necessary to improve the flow of traffic, reduce congestion, and improve safety. There is also an effort towards sustainability, as there is an attempt to reduce the amount of asphalt used for road construction and expand the use of more sustainable materials such as gravel, plastic, and rubber. The US Department of Transportation (DOT) is the body responsible for the construction and maintenance of the country’s roads. In addition to regulating construction and safety standards, the DOT also provides grants for road construction and improvement projects. These funds are allocated towards expanding existing roads and highways, as well as constructing new ones. The DOT also sponsors educational programs, such as the America’s Road Program, which provides resources and guidance to communities, local governments and developers on how to build and maintain safe, efficient, and cost-effective roads. The Roads to Everywhere program, another DOT program, encourages innovation in the development of new road materials and technologies. In addition to the DOT, there are a number of private organizations involved in the construction and maintenance of US roads. Companies like Cemex, Colas, and HRI provide expertise and materials for a wide variety of road projects. The US has come a long way since its first roads were built in the late 19th century, and its network of more than 2.8 million lane-miles of paved roads is a testament to its progress. This construction and maintenance of roads is made possible by the US Department of Transportation and its various initiatives, as well as the expertise of private companies. As the nation continues to expand its roadways, new technologies and materials will help the US remain at the forefront of the industry.
https://www.lifetechnology.com/blogs/life-technology-technology-news/study-carbon-neutral-pavements-are-possible-by-2050-but-rapid-policy-and-industry-action-are-needed
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