A traffic diversion will be in place near Corby for work to replace a mains water pipe.
The work will take place on the Great Easton Road at Bringhurst.
More than 1,100 metres of pipeline which is no longer fit for purpose is being replaced in a project starting today (Monday, August 17).
While the total project will take six weeks to complete, the road closure will be kept to one week to avoid disruption.
It will be closed from Monday, August 24, to Friday, August 28, and a diversion will be in place via Medbourne and Ashley.
Nik Shelton, from Anglian Water, said: “This is essential work needed to replace a pipeline which has reached the end of its life.
“It is part of a programme of investment across the region to upgrade older parts of our network.
“Although it is a big job we have managed to restrict the road closure to five days.
“Drivers will have to take a diversion during this time and we would like to thank them for bearing with us as we get the work done and return things to normal.
“We have sent letters to the local residents who will be most affected and we will have signage up in the areas to keep everyone informed.”
Anglian Water is investing £200,000 in the work, as part of a wider programme of investment in Northamptonshire worth nearly half a billion pounds.