Long before interstates and high-speed highways, there was U.S. Route 1 — America’s original north–south spine. 🛣️ This road follows ancient Native American paths, colonial trade routes, and the earliest city streets of the United States. From the rocky shores of Maine to the tropical highways of Florida, Route 1 connects some of the oldest, busiest, and most historic places in the country. Unlike modern highways built to avoid cities, Route 1 runs through them — Boston, New York, Philadelphia,