Proposals to dual part of the A47 in North Burlingham 'would split the village in two', parish councillors warned.
Their fears were raised to Broadland District Council's cabinet this morning as it discussed the options for the route.
Four possibilities have been put forward for improvements to single carriageway sections between Blofield and North Burlingham, and from North Tuddenham to Easton.
Broadland is being consulted on the options by Highways England before more detailed plans are put forward.
Speaking to cabinet members, Richard Morton, chairman of Lingwood and Burlingham Parish Council, said 'Routes one and two will have an affect on the village [North Burlingham] by splitting it in two.
'Where I live in Burlingham Green, to access Main Road in North Burlingham, it will mean a four-and-a-half mile drive to get from one side of the village to the other.'
He urged members to choose option three, which would see a new route constructed to the south of the A47.
Stephen Scowen, Broadland's economic development manager (partnerships and growth), told cabinet members that the first option, which follows the existing carriageway could result in disruption to road users.
Meanwhile, the second proposed route, which goes from the north of Blofield to the south of North Burlingham, could result in the closure of Dell Corner Lane to the north, according to Burlingham Ward councillor David Ward.
Members were told that a gas pipeline to the south of the A47 was also a 'constraint' to be considered.
Shaun Vincent, Broadland's portfolio holder for planning, said: 'Option three enables the rural network of roads which currently exist to function so the local community can move from freely between Burlingham Green and North Burlingham. It just makes sense.'
Members agreed to support option three.
Meanwhile, cabinet members also supported the third option for the proposed seven-mile route between North Tuddenham and Easton.
Mr Scowen told councillors it was the most 'favourable' route.
He said: 'It seems to result in less impact on the villages of Honingham and Hockering.'
Highways England has previously said it would hold a public consultation on the options for the route by the end of this year.
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