"This upgrade will enable people to travel safer, with less wear and tear on their vehicles and it will take the worry away for children on the school bus, especially when we have a storm."
The upgrade also means improved access to work and education, and services and amenities within easier reach.
The dangerous road on the section of Route 52, which runs between Weber and the northern boundary with Central Hawke's Bay has been a sore point in the community for some time.
In 2018, a message was painted on the road demanding it be fixed.
The work will include upgrades to the road's bridges, increasing road width, improving alignment and strengthening.
Work is expected to be completed in April 2024.