Motorists planning to use State Highway 2 Waioweka Gorge have been told to expect delays while crews work at slip sites.

NZTA said short periods of full closure were required while crews carried out rock scaling at the Manganuku slip site.

Crews would be at the slip site today to inspect the slip face, undertake rock scaling and make it safer for crews working on the road, NZTA said.

The work was expected to take one to two days, depending on site conditions.

This would require short periods of stop/stop traffic management, for up to 10 minutes at a time.

Outside of these periods, stop/go traffic management would remain in place and the road would continue to operate under one lane until final geotechnical clearance was received.

Once work at Manganuku was complete, crews would move to the Monument slip site to remove material from the base of the slip and install barriers.

Traffic management would also be required between 7.30am and 5pm, with delays of up to 10 minutes.

The Monument slip site.

NZTA said the road was expected to return to two lanes at this site once the work was complete. This work was weather-dependent.

Road users should follow the directions of crews, drive to the conditions and check the NZTA Journey Planner before travelling for the latest information.