South Road in Taunton will be closed for five days from Monday (26 October) to allow Tithegrove Ltd to carry out work linked to a new development.
This includes constructing new manholes in the carriageway and laying a new combined sewer pipe.
The closure has been timed to take place during half-term when traffic on this route is usually much quieter. The remaining work will be completed over the weekend of 31 October to 1 November with traffic lights at the junction of South Road with Holway Avenue.
While the closure is in place, there will be a signed diversion via Chestnut Drive, Lisieux Way and East Reach.