.svg) North Dakota Highway 6 | ||||
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| Route information | ||||
| Maintained by NDDOT | ||||
| Length | 67.143 mi (108.056 km) | |||
| Existed | 1939–present | |||
| Major junctions | ||||
| South end |  SD 63 north of McLaughlin, SD | |||
| North end |  I-94 BL in Mandan | |||
| Location | ||||
| Country | United States | |||
| State | North Dakota | |||
| Counties | Sioux, Morton | |||
| Highway system | ||||
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North Dakota Highway 6 (ND 6) is a 67.143-mile-long (108.056 km) major north–south highway in North Dakota. It runs from South Dakota Highway 63 in McLaughlin to Interstate 94 Business Loop in downtown Mandan.