Road users should expect road closures of up to 30 minutes between 9.30am and 2.30pm on weekdays, so Waka Kotahi advised to avoid travelling at this time if possible.
The work is expected to take seven weeks to complete so the road should be back to full functionality for both heavy and light vehicles by the end of May.
Waka Kotahi will update this advisory if there are any changes.
Elsewhere around Coromandel, road users will see contractors working between Ruamahunga and Tapu on a 40-metre-long rock fill site. Work will be ongoing there for around three weeks.
People are urged to check the Waka Kotahi Journey Planner before they travel and be prepared to wait.