Drilling work to install a larger water pipe under Heretaunga St in Hastings starts today.
The work, which is being undertaken by Monadelphous, will begin at the Nelson St intersection.
A spokesperson for Monadelphous said disruption to traffic and businesses along the street will be minimal due to the company's drilling technique.
Pits will be excavated at strategic places, about every two blocks, along the street with the drill fed through from one to the next rather than the usual open trenches.
Some car parks on the north side of the road will need to be coned off around the areas of the pits and over the drilling path.