Ice road truck

Passing a truck on the Sahtu winter road. (Joanne Stassen/CBC)

The N.W.T.’s Department of Transportation is warning drivers that the Sahtu winter road could close at any time.

Officials say the road is rapidly deteriorating and people have to start planning for its closure.

The department says despite colder temperatures in the Mackenzie Valley, bright sun and heavy traffic mean the road could be closed in less than a week.

Officials hope to give drivers at least three days notice before they close it, but they say that may not be possible.