"Our priority is to get this road open as soon as it is safe to do so, but freezing temperatures and further rain are forecast which can cause more rocks to fall or become loose.
"We know the closure is frustrating for the community and people travelling over the school holidays but we are using as much resource as we can to open this road again," Ms McLean said.
The information collected by the engineers will be used to determine if a longer term solution needs to be put in place at this particular slip site.
People can check the NZTA website, call 0800 4 HIGHWAYS (0800 44 44 49) or follow NZTA on social media to get the latest road closure information.
Simple rules for safe winter travelling
• allow extra time
• ensure your vehicle is safe for winter driving
• drive to the road and weather conditions
• slow down and be prepared for unexpected hazards
• allow greater following distance between you and the vehicle ahead
• make sure your cell phone is well charged, check car charger also
• have blankets, snacks, bottles of water ready in case of emergency or a breakdown.
Caption: The team keeping the digger working continuously on the Gisborne side of the slip - it is also being cleared from the Opotiki side.
Caption: Some of the equipment being used to clear the 5500m3 slip.
Editor's notes: The size of the slip is increasing as more debris is brought down. The next update is expected to be issued Wednesday evening.