"In the seven years since I became an MP I have seen the A47 getting worse with volumes of traffic up and road standards down," he said.
"The A47 has been neglected for decades. Dualling is now urgent. It's hitting the economy; the road is dangerous, its junctions need upgrading. Now is the time for the roads alliance in the county to come together and lobby government for funding."
When major improvements on the A47 costing £300m were announced last year Highways England said: "Safety runs through everything we do. The number of people hurt on the A47 is reducing, but we are determined to do more to improve safety."
Changes proposed to Norfolk's constituencies
BBC Look East political correspondent
Plans to re-draw Norfolk's parliamentary constituencies have been published this morning.
Unlike some parts of the UK, we get off quite lightly. The proposals include reducing the number MPs from 650 to 600, but Norfolk will still have nine MPs, although the size and shape of every seat will change.
Most of the changes are minor but the Mid Norfolk constituency will lose Wymondham (which goes back to South Norfolk) while South West Norfolk will be renamed Thetford & Downham Market and cross the border to take in Littleport in Cambridgeshire.
Labour's Clive Lewis may have to work a little harder to hold on to his Norwich South seat which inherits Conservative-leaning Costessey and Cringleford.
His Conservative neighbour, Chloe Smith, who only has a majority of 507, might feel a little safer as Norwich North will extend into Broadland.
The public has one final say on the plans and then they'll need to be voted on by MPs.
Given how much else is going on at Westminster, and the fact that these plans do not have cross-party support, it is possible that they'll never get approved.
'No appetite' in Tory party for another election
Theresa May has apologised to Conservative MPs for the party's election performance, telling a meeting of party backbenchers that she'd get them out of the mess she'd got them in to.
Mid Norfolk MP George Freeman, who was at that meeting, says leadership is all about acknowledging what's gone wrong and taking responsibility.
"To be fair to the prime minister, she took total responsibility last night, and she acknowledges she has now to prove she's listening, she gets it, she understands, and will act on what's gone wrong."
We're living at a time of incredibly volatile politics and Theresa May is signalling she gets it. She's going to create a government that's listening and reaching out to other parties in the house, and I think there's no appetite in the Conservative Party of the country for another election, referendum or leadership - people want us to get on and do the job."