The installation of the critical new water main between Hastings and Havelock North is continuing at a good pace with nearly a quarter of the water pipe in place.
So far, 1000 metres of pipe has been laid across the four work sites.
From Monday the work will move into Sylvan Rd, the western-most section of the project.
That will entail the closure of Sylvan Rd, between Heretaunga St East and Avenue Rd, and Queen St, between Park Rd North and Riverslea Rd, to through traffic.
Access will be maintained for residents, service and emergency vehicles. Residents along the affected stretch of the streets are being individually contacted by project managers.
The estimated time for the closure is three weeks, weather permitting. The number of sites for this project across Hastings is four, with different traffic management processes in place depending on the length of the site, the amount of traffic using the road, and the hours of work.