North Dakota Highway 1806

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North Dakota Highway 1806 marker

North Dakota Highway 1806
Lewis and Clark Trail
Route information
Maintained by NDDOT
Sioux–Morton segment
South end: SD 1806 at the North Dakota/South Dakota border
ND 24 near Cannon Ball, North Dakota
I-94 in Mandan
North end: Oliver–Morton county line near Mandan
Lake Sakakawea segment
South end: ND 8 near Halliday
North end: ND 200 near Pick City
Charlson segment
South end: ND 23 near Charlson
North end: CR 2/55 near Charlson
Tobacco Gardens segment
South end: ND 23 near Watford City
North end: Tobacco Gardens Creek Recreation Area
Counties: Dunn, McKenzie, Mercer, Morton, Oliver, Sioux
Highway system
  • North Dakota State Highways
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]

Route description[edit]

The westernmost segment begins east of Watford City on North Dakota Highway 23, and runs north its northern terminus at the Tobacco Gardens Recreation Area on the southern shore of Lake Sakakawea. The next segment of ND 1806 begins a few miles east-southeast of Tobacco Gardens and heads east before turning south and passing through Charlson. The southern end of this segment also ends at ND 23. The third segment runs east-west, and begins at ND 8 between Halliday and Twin Buttes. This segment parallels the southern shore of Lake Sakakawea before ending at ND 200 southwest of Pick City. The fourth and final segment of ND 1806 is largely north-south, with its northern end near the Oliver-Morton county border north of Mandan. The highway intersects Interstate 94 and passes through downtown Mandan before following the Missouri River south through Morton County and onto the Standing Rock Indian Reservation. The highway is concurrent with North Dakota Highway 24 for much of its length in Sioux County, and breaks with Highway 24 north of the North Dakota/South Dakota border. After entering South Dakota, the highway continues as South Dakota Highway 1806.


In October 2016, protest activity on the Standing Rock Indian Reservation related to the Dakota Access Pipeline caused the highway to be shut down indefinitely between ND 24 and Fort Rice by the Morton County Sherriff's Department.[2] The Backwater Bridge on ND 1806 served as the site of conflict between protesters and law enforcement, with protesters barricading themselves on the bridge and burning cars.[3]

Major intersections[edit]

Sioux–Morton segment[edit]

County Location mi[1] km Destinations Notes
Sioux 0.000 0.000 SD 1806 South Dakota state line
ND 24 Southern end of ND 24 overlap
31.190 50.195 ND 24 – Solen Northern end of ND 24 overlap
Morton Mandan 70.086 112.792 I-94 Bus. west (Main Street) Southern end of BL 94 overlap
70.548 113.536 I-94 Bus. east (Memorial Highway) – Bismarck Northern end of BL 94 overlap
71.225 114.626 I-94 – Billings, Bismarck
county line
85.800 138.082 River Road Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Lake Sakakawea segment[edit]

County Location mi[1] km Destinations Notes
Dunn 181.918 292.769 ND 8 Western terminus
Mercer 140.000 225.308 ND 200 Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Charlson segment[edit]

The entire section is in McKenzie County.

Location mi[1] km Destinations Notes
266.000 428.086 ND 23 – New Town, Watford City Southern terminus
274.208 441.295 County Road 55 Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Tobacco Gardens segment[edit]

The entire section is in McKenzie County.

Location mi[1] km Destinations Notes
311.577 501.435 ND 23 Southern terminus
311.315 501.013 ND 23B west
285.563 459.569 County Road 2 Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


Route map: Bing / Google

KML is from Wikidata
  1. ^ a b c d e f g North Dakota Route and Mileage Map (PDF) (Map). North Dakota Department of Transportation. 2016. Retrieved December 29, 2016. 
  2. ^ Evans, Bo (October 24, 2016). "Highway 1806 closed indefinitely due to DAPL protest". KFYR-TV. Retrieved December 29, 2016. 
  3. ^ Grueskin, Caroline (November 20, 2016). "Police and protesters face off at Backwater Bridge". Bismark Tribune. Retrieved December 29, 2016.