The closure will affect the eastbound stretch of the major road between the Norwich Road junction at Dereham and the Longwater junction at Costessey. It comes amid National Highways' ongoing works to dual the A47 between Dereham and Norwich to "support economic growth and ease congestion in the area". A diversion will be in place, directing traffic via the A1065, A134, and A11 before re-joining the A47. A spokesman for National Highways said: "Please remember that closures can change at short notice. "Drivers can find the latest information on our daily closures page or check for current incidents, disruptions and delays."