Ep 54. Superhighways

Superhighways; Episode 54 of Season 16 of Modern Marvels explores the history, design, and construction of the highway systems that have revolutionized transportation in America. The episode examines the early history of roads, tracing the development of the US highway system from the early 20th century to present day. It details the engineering and technology behind the creation of modern highways, including the development of concrete and asphalt, and the design and construction of modern interchanges, bridges, and tunnels.

The episode highlights some of the key milestones in the history of highway construction, such as the construction of the first transcontinental highways, and the development of the interstate highway system by President Dwight Eisenhower. It also explores the cultural significance of the interstate highway system, which has been both celebrated as a symbol of American mobility and freedom, and criticized for its environmental impact, physical division of communities, and displacement of people and businesses.

Throughout the episode, viewers are introduced to the professionals who design, build, and maintain modern highways. This includes engineers who use sophisticated computer models to design interchanges with optimal traffic flow, construction workers who assemble massive pre-fabricated concrete segments to build bridges, and maintenance crews who use state-of-the-art equipment to repair damaged pavement.

The episode also covers some of the key challenges faced by modern highway systems, such as traffic congestion, safety concerns, and environmental impact. It examines innovative solutions to these challenges, such as the development of smart highways, which use sensors and other technology to monitor traffic flow and reduce congestion, and the use of materials such as recycled rubber and plastic to create more durable and sustainable pavements.

Overall, Superhighways offers a fascinating look at the history and technology behind one of America's most ubiquitous and essential infrastructure systems. By exploring the challenges and innovations of modern highway design and construction, the episode highlights how this system has transformed our lives and our economy, and continues to shape our vision of the future.