The Dettah ice road is a winter road of about 6.5 km across Yellowknife Bay, linking Yellowknife with the Yellowknives Dene First Nation community of Dettah. The Government of the Northwest Territories builds it each winter. It usually opens between late December and late January, closes in early to mid-April, and saves about 15 to 20 minutes over the year-round road around the bay.
What is the Dettah ice road?
Dettah sits on the east shore of Yellowknife Bay, across the water from Yellowknife’s Old Town. It is one of the two communities of the Yellowknives Dene First Nation; the other is Ndılǫ, at the tip of Latham Island next to Old Town. Wikipedia puts Dettah’s population at 192 in the 2021 census.
In summer the only way to Dettah by road is the long way: out the Ingraham Trail (Highway 4), across the Yellowknife River, and down the Dettah access road, about 27 km in all. Once the bay freezes thick enough, the GNWT builds a straight crossing over the ice instead. It is about 6.5 km, and Cabin Radio reports that it saves 15 to 20 minutes each way.
For people in Dettah it makes the trip into town much shorter all winter. For everyone else, it is a maintained, marked road on a frozen lake a few minutes from downtown.
When does the Dettah ice road open?
There is no fixed date. Crews wait for the ice in the bay to grow thick enough, then build and test the road, and it opens to light vehicles first. Recent seasons show how much that varies:
| Season | Opened | Source |
|---|---|---|
| 2023 to 2024 | Late January | Cabin Radio |
| 2024 to 2025 | December 21, the earliest since 2014 | Cabin Radio |
| 2025 to 2026 | December 22 | Cabin Radio |
When it opened in December 2024, the road was open to vehicles under 5,000 kg. Check the posted weight limit before you take anything heavy across.
A warm fall or a heavy early snowfall slows things down, because snow insulates the ice and keeps it from thickening. So if the first weeks of winter are mild or snowy, expect January.
When does it close for the season?
Usually in early to mid-April, once warm days start to soften the road. In 2025, Cabin Radio reported that the road closed on April 8, the same day temperatures reached 7°C and the Yellowknife-end ramp turned to slush and meltwater. That year the GNWT put the road on a 48-hour watch first, then closed it until further notice within hours.
How do you check if the Dettah ice road is open?
Use the GNWT’s highway conditions map, DriveNWT. The GNWT’s DriveNWT page explains how it works and links to the map. It shows ice crossings and winter roads alongside the highways, with their status in colour (green for open, yellow or orange for caution, red for closed) and a layer for weight restrictions on winter roads and ice crossings.
Local news outlets in Yellowknife also report the opening and closing day each year.
A closed ice road is closed. The GNWT’s winter driving advice puts it plainly: “Roads are closed for the safety of the traveling public. Please obey all signs.”
What should you know before driving it?
The GNWT asks drivers on winter roads and ice crossings to follow the posted speed limits, which are set to protect the road itself, and to obey posted load limits. Heavy vehicles should leave extra space between them. Wind and drifting snow can make it hard to see the edges of the road, so slow down when visibility drops.
A few common-sense points for the crossing:
- Stay on the maintained road between the markers. Tracks that wander off across the bay are not part of it, and nobody is checking the ice under them.
- Expect the ramps at each end to be the roughest part, especially early and late in the season.
- Pull over only where there is room to stop well off the driving lanes.
- Keep a winter kit in the car even for a short crossing. The GNWT’s list includes extra layers, blankets, a shovel, a flashlight, and a two-way radio or satellite phone.
Is the ice road a good place to see the aurora?
It can be. Out on the bay you are away from most of the city’s lights, with a wide view of the sky to the north. Some people in Yellowknife drive out on clear winter nights for that reason. Be careful where you stop: other drivers are using the road in the dark, so stay off the driving lanes and use your hazard lights.
For a group, an aurora viewing trip by charter saves everyone from driving and parking on the ice at night. A professional driver handles the road, your group decides where it wants to go, and everyone gets home warm.
How do you get to Dettah without a car?
Yellowknife Transit runs inside the city and does not go to Dettah. For one or two people, a taxi is the simplest answer. Our guide to getting around Yellowknife without a car covers taxis, transit and the rest.
For a group, Fullstride’s 14-passenger van can be chartered: a family heading to a feast or a celebration, a team going to a game, a workplace outing, or visitors who want an evening on the ice. Whether the van takes the ice road or the year-round road around the bay depends on the posted limits that day, and we will tell you which when we confirm the trip. For celebrations in town, see weddings and events.
