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The following is a list of territorial highways in the Northwest Territories of Canada. They are divided amongst Arterial Class Highways, of which there are six; Collector Class Highways, of which there are 23; and closed highways, of which there are two. Only some places in the Northwest Territories can be reached by means of highways.
| Number | Length (km)[1] | Length (mi) | Southern or western terminus | Northern or eastern terminus | Local names | Formed | Removed | Notes |
|---|---|---|---|---|---|---|---|---|
 Highway 1 |
690.0 | 428.7 |  Highway 35 at Alberta border north of Indian Cabins | Wrigley | Mackenzie Highway | 1949 | current | Longest highway in the territory |
 Highway 2 |
48.6 | 30.2 |  Highway 1 in Enterprise | Northwest corner of Vale Island in Hay River | Hay River Highway | 1949 | current | Shortest highway in the territory |
 Highway 3 |
338.8 | 210.5 | Highway 1 near Fort Providence |  Highway 4 in Yellowknife |
Yellowknife Highway | 1960 | current | Also known as the Great Slave Highway |
 Highway 5 |
267.0 | 165.9 |  Highway 2 near Hay River |  Highway 48 at Alberta border in Fort Smith |
Fort Smith Highway | 1966 | current | Passes through Wood Buffalo National Park |
 Highway 7 |
254.1 | 157.9 |  Highway 77 at British Columbia border south of Fort Liard | Highway 1 near Fort Simpson |
Liard Highway | 1984 | current | Packed dirt and gravel road |
 Highway 8 |
272.5 | 169.3 |  Hwy 5 at Yukon border |  Highway 10 in Inuvik |
Dempster Highway | 1979 | current | Canada's only all-weather road to cross the Arctic Circle; studies are being done to include a possible link to the Mackenzie Highway |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | ||||||||
| Number | Length (km)[2] | Length (mi) | Southern or western terminus | Northern or eastern terminus | Local names | Formed | Removed | Notes |
|---|---|---|---|---|---|---|---|---|
| Highway Aklavik Ice Road | 116 | 72 | Aklavik |  Highway 8 in Inuvik |
Aklavik Ice Road | — | — | Seasonal |
| Highway Colville Lake Winter Road | 165 | 103 | Wrigley-Fort Good Hope Winter Road | Colville Lake | Colville Lake Winter Road | c. 2008 | current | Seasonal |
| Highway Délîne Winter Road | 105.3 | 65.4 | Wrigley-Fort Good Hope Winter Road | Délîne | Délîne Winter Road | — | — | Seasonal |
| Highway Dettah Ice Road | 6.3 | 3.9 | Dettah | School Draw Avenue in Yellowknife | Dettah Ice Road | — | — | Seasonal |
| Highway Dettah Road | 11.3 | 7.0 | Dettah | Highway 4 |
Dettah Road | — | — | |
| Highway Fort Liard Access Road | 5.3 | 3.3 | Fort Liard |  Highway 7 |
Fort Liard Access Road | — | — | |
| Highway Fort McPherson Access Road | 1.1 | 0.68 | Highway 8 | Fort McPherson | Fort McPherson Access Road | — | — | |
| Highway Fort Providence Access Road | 5.4 | 3.4 |  Highway 3 | Fort Providence | Fort Providence Access Road | — | — | |
 Highway 6 |
90.0 | 55.9 |  Highway 5 near Hay River | Fort Resolution | Fort Resolution Highway | — | — | Also provides access to the former community of Pine Point. |
| Highway Fort Simpson Access Road | 3.4 | 2.1 | Highway 1 | Fort Simpson | Fort Simpson Access Road | — | — | |
| Highway Gamètì Winter Road | 128.0 | 79.5 | Whatì Winter Road | Gamètì | Gamètì Winter Road | — | — | Seasonal; previously Rae Lakes Ice Road |
 Highway 4 |
69.2 | 43.0 | Highway 3 in Yellowknife | Tibbitt to Contwoyto Winter Road | Ingraham Trail | c. 1965 | current | Provides access to Dettah (27 km (17 mi)) when the ice road (6.5 km (4.0 mi)) is closed. |
| Highway Inuvik Access Road | 0.6 | 0.37 | Highway 8 | Inuvik | Inuvik Access Road | — | — | |
 Highway 10 |
133.6 | 83.0 | Highway 8 near Inuvik | Tuktoyaktuk | Inuvik-Tuktoyaktuk Highway | 2017 | current | Replaced the Inuvik-Tuktoyaktuk Ice Road; construction began 2013, completed 2017 and opened in November. |
| Highway Nahanni Butte Winter Road | 22.3 | 13.9 | Nahanni Butte | Highway 7 |
Nahanni Butte Winter Road | — | — | Seasonal |
| Highway Sambaa K’e Winter Road | 126.0 | 78.3 | Sambaa K’e | Highway 1 |
Sambaa K’e Winter Road | — | — | Seasonal |
| Highway Tibbitt to Contwoyto Winter Road | 568 | 353 | Tibbitt Lake | Contwoyto Lake, Nunavut | Tibbitt to Contwoyto Winter Road | 1982 | current | Private road first built in 1982 to service mines and exploration activities |
 Highway 9 |
97.0 | 60.3 | Highway 3 near Behchokǫ̀ | Whatì Winter Road near Whatì | Tłı̨chǫ Highway | 2021 | current | Opened in November 2021. |
| Highway Rae Access Road | 10.5 | 6.5 | Highway 3 | Rae borough in Behchokö | Rae Access Road | — | — | |
| Highway Wekweètì Winter Road | 235.0 | 146.0 | Whatì Winter Road | Wekweètì | Wekweètì Winter Road | c. 2019 | current | Seasonal |
| Highway Whatì Winter Road | 100 | 62 | Highway 3 | Whatì | Whatì Winter Road | — | — | Seasonal; previously Lac La Martre Winter Road |
| Highway Wrigley-Fort Good Hope Winter Road | 486.4 | 302.2 | Highway 1 | Fort Good Hope | Wrigley-Fort Good Hope Winter Road | — | — | Connects to Tulita (formerly Fort Norman), Norman Wells, Fort Good Hope, with 106 km branch route to Deline and 165 km branch route to Colville Lake. Thirty-four permanent bridges completed along route which can be used as part of an all-weather route. |
| Highway Yellowknife Access Road | 3.6 | 2.2 | 49th Avenue, Yellowknife | Giant Mine Boat Launch Access Road | Yellowknife Access Road | — | — | Turns into 48th Street at 49th Avenue. |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | ||||||||
| Highway | Name | Length (km)[3] | From[4] | To | Notes |
|---|---|---|---|---|---|
| Tuktoyaktuk Winter Road (closed) | 187 km (116 mi) | Inuvik | Tuktoyaktuk | Former ice road; closed permanently in April 2017 with the completion of the Inuvik-Tuktoyaktuk Highway | |
| Canol Road (closed) | 357 km (222 mi) | Norman Wells | Macmillan Pass, Yukon/Northwest Territories border | Second World War road completed early 1943, abandoned mid-1945, now the Canol Heritage Trail, connecting to the active Yukon Highway 6, the Canol Road |
The communities reached by the all-weather highway network are:
Communities that can only be reached by ice-road are:
Communities with no access by surface vehicle:
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