MPs from across the region have quizzed Highways England on progress for the upgrade of the A47.
In 2013, the A47 was one of six schemes to be included in the Strategic Road Network improvement programme.
Originally the A47 was not on the list but after sustained lobbying by MPs, the Department for Transport added it to the final six.
The A47 improvement corridor is at the heart of the biggest road improvement scheme in the last 40 years and MPs are keen to see the work started as soon as possible.
Attending the meeting held on Thursday in the House of Commons was Elizabeth Truss MP, Henry Bellingham MP, Wole Adetola (project manager for Highways England) and Andy Heap (programme manager Amey).
“Elizabeth Truss MP said: “I am keen to ensure that Highways England is planning for the long term so the A47 is future proofed for further upgrades.
“Along with my fellow MPs, we want the A47 fully dualled and I have asked Highways England to present the economic case for this.
“The £300 million investment announced in December 2014 is a fantastic boost for the area and will certainly help to ease the pressure on the route but I am keen to ensure there are no unnecessary delays in getting the work started.
“I also believe that consideration needs to be given for housing along the road and Broadend Road junction in my South West Norfolk constituency of Walsoken is certainly a crossroads that needs further upgrades due to the considerable safety concerns there.
“Highways England want to see a reduction in accidents of 40 per cent.”