I-395, or Interstate 395, is a major highway in the United States that runs through the eastern part of the country. It connects the city of Washington, D.C. to Northern Virginia, providing a vital route for commuters and travelers. The highway spans approximately 14 miles and is known for its heavy traffic, especially during peak hours. The interstate is part of the larger Interstate Highway System, which facilitates long-distance travel and commerce across the nation. I-395 also intersects with several other major roads, including I-95 and I-66, making it an important corridor for both local and regional transportation.