Highways bosses are considering building new stretches of road either north or south of the current A47 at Hockering and south of the current A47 between Blofield and North Burlingham.

Details of the £300m A47 upgrade along six stretches of the route will be unveiled at a launch event in Peterborough.

Norfolk councillors and MPs have already been briefed about the plans for the Norfolk stretch of the route.

Highways England said it was at an early phase in the process and could not say how many homes might be affected by the different options which will form part of a six week consultation.

New stretches of road either north or south of the current A47 at Hockering are among four options which are being considered by Highways England. Four options have also been drawn up to create a dual carriage way between Blofield and North Burlingham which includes building a new stretch of road.

Engineers have also come up with plans to build a slip road at the Thickthorn Roundabout for northbound A11 drivers heading towards Great Yarmouth.

A slip road will also take drivers joining the A11 southbound from Great Yarmouth away from the Thickthorn roundabout.

Plans for new stretch of road on the A47 between Wansford and Sutton so the A47 has two carriageways in each direction will also be unveiled in the brochure of options.

Work on the Vauxhall and Gapton roundabouts is also part of the £300m upgrade.

New traffic lights will be put in place at both junctions. The Breydon Bridge is due to be widened and the Vauxhall roundabout could be enlarged.

Highways England, which is now running a consultation on the plans for six weeks until April 21, has sent letters to people living in homes which might be affected by the work.

Phil Davie, the senior responsible officer for the A47, said they had done a lot of work looking at the options for the route and feedback would be incredibly valuable.

He said that consultation responses would shape the options they took forward for the route.

He urged people to go to the consultation sessions to be talked through the detail and to ask questions.

Work is not expected to start on the road until March 2020.

A website with the detailed maps is also due to go live today with details of the consultation events.

There will be three public events for each of the six schemes.