U.S. Route 20
U.S. Highway 20 (US 20) is an east–west United States highway that stretches from the Pacific Northwest all the way to New England. The "0" in its route number indicates that US 20 is a coast-to-coast route. Spanning , it is the longest road in the United States, and particularly from Newport, Oregon to Boston, Massachusetts, the route is roughly parallel to that of the newer Interstate 90 (I-90), which is in turn the longest Interstate Highway in the U.S. There is a discontinuity in the official designation of US 20 through Yellowstone National Park, with unnumbered roads used to traverse the park.
Massachusetts Turnpike
The Massachusetts Turnpike (colloquially "Mass Pike" or "the Pike") is a toll road in the U.S. state of Massachusetts that is maintained by the Massachusetts Department of Transportation (MassDOT). The turnpike begins at the New York state line in West Stockbridge, linking with the Berkshire Connector portion of the New York State Thruway. Spanning along an east–west axis, it is entirely concurrent with the portion of Interstate 90 (I-90) that lies within the state. The turnpike is the longest Interstate Highway in Massachusetts, while I-90 in full (which begins nationally in Seattle, Washington) is the longest Interstate Highway in the United States.