Smiths Lane, in Fakenham, will close from its junctions with Norwich Road and A1067 Pensthorpe Road to Gwyn Crescent.
This is to undergo gas main replacement works, which will be carried out by Cadent.
The closure will be split into phases, with the first scheduled to take place between November 2 to 22.
Phase two involves the road shutting from Pensthorpe Road and will last from November 23 to December 4.
A diversion route will be put in place for the duration of the closure (Image: One.network)
A spokesman for Norfolk County Council said: “The [traffic] order shall automatically revoke on the completion of the works/when the closure is no longer necessary or otherwise on the 4th June 2027 without further notice.
“If necessary, the restriction could run for a maximum period of 18 months from the date the Order is effective.”
The diversion route will take motorists via Smiths Lane, Pensthorpe Road and Norwich Road, with the reverse route in the second phase.
It will add two minutes to journeys.