A new bridge could be built in the centre of Lowestoft as part of a proposal to extend a major road.
A meeting between councillors, business representatives and Waveney MP Peter Aldous was held on Monday to launch a campaign to extend the A47.
The road runs from Leicestershire to Great Yarmouth in Norfolk.
It is hoped by extending the A47 to Lowestoft via a trunk road, money could be provided for a third crossing over Lake Lothing.
The politicians are to discuss the scheme with Transport Minister Stephen Hammond later this month.
Mark Bee, leader of the Conservative-run Suffolk County Council, said the road extension would help ease congestion in the town.
"We want to see the A47 improved and Lowestoft and Great Yarmouth linked in a new way that will genuinely benefit the town and the county," he said.
"We will be pushing for this high up on Stephen Hammond's priority list."