Interstate 80, commonly known as I-80, is a major east-west highway in the United States. It stretches approximately 2,900 miles from San Francisco, California in the west to Teaneck, New Jersey in the east. I-80 is a vital transportation route, connecting several key cities and regions across the country. The highway was established as part of the Eisenhower Interstate System in 1956 and serves as a critical corridor for both commercial and personal travel. It passes through diverse landscapes, including mountains, plains, and urban areas, making it an important artery for trade and tourism.