The route for a northern distributor road (NDR) around Norwich has been agreed, but it will not be a ring road.
The new route is to relieve pressure in the north of the city
Norfolk county councillors decided at a special meeting on Monday that building a new road west of the city would be too damaging to the environment.
Councillors agreed to take the route from the A47 at Postwick in the east up to the airport and then across to the A1067 Fakenham road.
Controversial plans to cross the Wensum Valley to rejoin the A47 were rejected.
But the decision has angered some with more than 1,000 people signing a petition opposing the route to the east of the city.
Though Wensum Valley has been spared, the Green Party is still worried about the environmental impact of a new road.
The Liberal Democrats feel that not making the road a complete ring road does not properly solve the traffic problem.
The need for an NDR road was identified as a regional priority in the draft East of England Plan.
There was widespread opposition to several of the proposed routes and most leading environmental organisations had condemned all suggested routes.
Norwich already has a southern bypass and one aim of a new route to the north is to relieve the city's congested inner ring road.
About 78% of local residents supported the relief road in principle, according to findings by Norfolk County Council.
The new road will not be built for five years.