A section of State Highway 1, which closed after severe flooding this week, is on track to reopen on Tuesday if the weather remains stable.
NZ Transport Agency Waka Kotahi (NZTA) said good progress is being made on repairing and clearing the section of the highway that stretches from Cheviot in North Canterbury to Kaikōura.
Inland Route 70, also known as the Inland Kaikōura Road, to the west of Kaikōura also remains closed.
Roading crews have cleared rocks and vegetation that came down into the road during a slip yesterday.
They are now focused on placing rocks where the highway has been eroded by high river levels and flooding near Hawkswood and Ferniehurst.
Crews are also clearing fallen trees and other debris on the highway in the Hundalee Hills area.
NZTA said it will provide further updates tomorrow on when the affected section of the highway will reopen.
“People should be aware that when the reopening does happen, it may be done in a staged way, with some initial restrictions to ensure road users are kept safe,” the agency said in a statement.
Travellers moving through the area are able to take a detour via State Highways 7, 65, 6 and 63, which are open.
Meanwhile, road users are being warned about ongoing severe frosts and icy conditions in inland areas of the South Island through to Monday.
Crashes were reported from the Mackenzie Basin this morning, which is forecast to hit a low of -10C.
Hoar frosts, freezing fog and black ice are likely to affect State Highways 8 and 80.
People are being asked to take extra care when travelling on these roads, and to consider avoiding travel at night and early morning when the ice risk is highest.