Highway 80, also known as Interstate 80 (I-80), is a major east-west interstate highway in the United States. It stretches approximately 2,900 miles from San Francisco, California to Teaneck, New Jersey, making it one of the longest highways in the country. The highway passes through several states, including Nevada, Utah, Colorado, Nebraska, and Illinois, connecting various cities and regions along the way. Originally constructed as part of the Eisenhower Interstate System, I-80 was designed to facilitate efficient transportation across the nation. It serves as a vital route for both commercial and personal travel, providing access to numerous attractions, including national parks and urban centers. The highway plays a significant role in the economy by supporting freight movement and tourism.