Traffic has been reduced to one lane on a section of the Trans-Canada Highway between Perth-Andover and Florenceville after part of an embankment slid away.
Snow and ice melting around Kilometre 125 resulted in the slope beside a section of the highway giving way.
"The slope became distressed due to the runoff of water and it just gave way," said Felicia Murphy of Brun-Way, the company that maintains the Trans-Canada Highway in that area.
The embankment that gave way is below the level on the highway, on the right side of the westbound lanes.
Traffic in the westbound direction has been reduced to one lane, with vehicles diverted from the driving lane, or right-hand lane, said Murphy.
"It's just to kind of veer people away from that area, to kind of limit distraction and things like that," she said. "There's no danger to the public or motorists or anything like that in terms where the slope distress is.
"It's quite a distance from the paved lane actually, so there is no emergency or anything like that for the paved lanes."
Murphy says work is taking place to stabilize the area.
"We're hoping to actually have the lane closure down by late today or early tomorrow," she said. "It's not something to be alarmed with the highway.
"The integrity of the highway appears to be just perfectly fine."
Vehicles are also required to reduce speed in the area.
Work on the embankment will be carried out around the clock, according to a notice from the Department of Transportation.
The slope gave way on Saturday morning.