Somerset County Council has decided the work is needed as the road has numerous cracks and potholes.
The work is planned for Friday, February 12 and will last for one evening, with the road closed between 6.30pm and 11.30pm.
Councillor John Woodman, Somerset County Council’s Cabinet Member for Highways said: “The upcoming resurfacing of Cornhill is a vitally important scheme.
“We’ve planned for the work to go ahead in the evening to keep disruption and disturbance to a minimum, and we’ll do everything we can to complete the works as quickly as possible.
“Access to homes and businesses will be maintained – please liaise with on-site staff.”
During the road closure a suggested diversion route will be clearly signposted on site or can be found at www.travelsomerset.co.uk/roadworks. Stay up to date with this and other roadworks schemes by following @TravelSomerset on Twitter.
The county council looks after more than 4,170 miles of road and in 2019/20 spent £26.1m to keep the county moving – filling in 18,519 potholes and working on 385 highway maintenance schemes ranging from drainage works to carriageway and pavement resurfacing.