That work will mean additional delays for road users.
Contractors are also working on seal widening between Te Aute and Otane on SH2 south as part of a safety upgrade programme.
Slight delays can also be expected as temporary speed restrictions have been put in place.
On SH50 around the Glencoe Gorge the road has been reduced to one lane with a give way system in place.
The stretch was affected by a drop-out during heavy rain a few months ago.
Drop-out repairs are also being done on SH38 between Wairoa and Lake Waikaremoana around the Terapatiki Bridge and a temporary give way system has also been put in place there.
While no major works are being carried out on SH5 between Napier and Taupo, motorists can expect to come across roadmarking crews between Tarawera and Eskdale and are advised to drive with caution around the mobile roadmarking machines.