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DODGE STREET (Highway 20)

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DODGE STREET (Highway 20). U.S. Route 20, as indicated by the "0," a coast-to-coast route; however, because national park roads do not have signage for U.S. numbered highways, a gap exists through Yellowstone National Park and splits the route into two sections. Spanning 3,365 miles (5,415 km), it is the longest road in the United States.

It and U.S. Route 30 break the general U.S. route numbering rules in Oregon, since U.S. 30 actually starts north of U.S. Route 20 and runs parallel to the north throughout the state. The two overlap and continue in the "correct" positioning near Caldwell, Idaho. This is because U.S. 20 was not a planned coast-to-coast route while U.S. 30 was. U.S. 20 originally ended at the eastern entrance of Yellowstone Park; it was extended in 1940.

As of 2007, Highway 20's eastern terminus is in Boston, Massachusetts, at Kenmore Square, where it meets Route 2. Its western terminus is in Newport, Oregon, at an intersection with U.S. Route 101, within a mile of the Pacific Ocean.