North Dakota Highway 1806

North Dakota Highway 1806
ND 1806 highlighted in red
Route information
Maintained by NDDOT
Length	130.75 mi[1] (210.42 km)
Tourist routes	Lewis and Clark Trail Native American Scenic Byway
Sioux–Morton segment
Length	54.610 mi (87.886 km)
South end	SD 1806 at the North Dakota/South Dakota border
Major intersections	ND 24 near Cannon Ball, North Dakota I-94 in Mandan
North end	Oliver–Morton county line near Mandan
Lake Sakakawea segment
Length	41.918 mi (67.460 km)
South end	ND 8 near Halliday
North end	ND 200 near Pick City
Charlson segment
Length	8.208 mi (13.209 km)
South end	ND 23 near Charlson
North end	CR 2/55 near Charlson
Tobacco Gardens segment
Length	26.014 mi (41.865 km)
South end	ND 23 near Watford City
North end	Tobacco Gardens Creek Recreation Area
Location
Country	United States
State	North Dakota
Counties	Dunn, McKenzie, Mercer, Morton, Oliver, Sioux
Highway system
North Dakota State Highway System Interstate US State
← ND 1804 → ND 1

North Dakota Highway 1806 (ND 1806) is a state highway in the U.S. state of North Dakota. ND 1806 and ND 1804 were named to reflect the years of Lewis and Clark's travels through the area, and run along the southwest and northeast sides of the Missouri River, respectively.^[1] ND 1806 consists of four separate segments, running along Lake Sakakawea and the Missouri River in McKenzie, Dunn, Mercer, Oliver, Morton, and Sioux Counties.

Within the Standing Rock Indian Reservation in Sioux County, ND 1806 forms the northern segment of the Native American Scenic Byway, a national scenic byway. Other sections of the highway are known as part of the Lewis and Clark Trail.^[1]