U.S. Highway 20 | ||||
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Route information | ||||
Maintained by NDOR | ||||
Length: | 431.60 mi (694.59 km) | |||
Existed: | 1926 – present | |||
Tourist routes: |
Bridges to Buttes Byway | |||
Major junctions | ||||
West end: | US 20 west of Harrison | |||
US 385 near Chadron US 83 near Valentine US 183 at Bassett US 281 at O'Neill US 275 at O'Neill US 81 near Randolph US 75 / US 77 near South Sioux City |
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East end: | I-129 / US 20 / US 75 at South Sioux City | |||
Highway system | ||||
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U.S. Highway 20 is a part of the United States Numbered Highway System that runs for 3,365 miles (5,415 km) from Newport, Oregon to Boston, Massachusetts. Within the State of Nebraska it is a state highway that begins on the Wyoming–Nebraska state line west of Harrison near the Niobrara River and runs to the Nebraska–Iowa state line in South Sioux City. Throughout its 431.60-mile (694.59 km) length the route passes through a diverse range of landscapes including bluffs and escarpments in the Northwest Panhandle, the Nebraska Sandhills in the northern part of the state, and rolling hills and plains as the highway approaches the Missouri River valley south of Sioux City, Iowa. Throughout its length, US 20 is a two-lane highway with the exception of the easternmost 8.45 miles (13.60 km) which is four-lane divided highway, the last 3.21 miles (5.17 km) of which is concurrent with Interstate 129. The 197 miles (317 km) between the Wyoming border and Valentine is designated as the Bridges to Buttes Byway, one of nine scenic byways in the state of Nebraska.