Details have been revealed for £2bn investment into roads in the Eastern region over the next five years.
It comes as part of the Department of Transport's Road Investment Strategy to triple levels of spending on roads in England by the end of the decade.
Some of the schemes are already underway, such as the building of a new link between two major roads north of Bedfordshire.
Schemes due to start in the region by 2019/20 include:
A14 Cambridge to Huntingdon subject statutory processes, building a bypass to the south of Huntingdon and widening some of the existing carriageway near Cambridge, as well as the A1 between Brampton and Alconbury.
Upgrading six sections of the A47/A12 corridor in Norfolk 115 mile section of the A47 between Peterborough and Great Yarmouth. This will include converting almost eight miles of single carriageway to dual carriageway and making improvements to three junctions.
Increasing capacity on the A1(M) providing an additional 14 lane miles to relieve congestion in Hertfordshire, including Stevenage and Welwyn Garden City.
Upgrading technology at M11 junctions across Essex and Cambridgeshire from Stansted Airport to Cambridge.
Providing technology along the A12 in Essex and Suffolk from the M25 to Ipswich and widening the stretch between Chelmsford and the A120 to three lanes, adding 30 miles of additional lane capacity.
Providing a new 13-mile stretch of dual carriageway on the A428 between western Cambridgeshire and the north east of Bedfordshire.
Building 17 new cycle paths across the region including along parts of the A12, A47, A120 and A5.
Members of Highways England met with suppliers and other stakeholders in Bury St Edmunds to discuss the road improvements further.
"The main problem that people are telling us about is the congestion that they're experiencing, plus in the East of England we do have a particular issue with economic growth. The A14 scheme which we're developing at the moment will tackle those sorts of issues, and will address congestion and improve road safety for users in the future."
“As part of our long-term economic plan, we are making the biggest investment in roads in a generation.
“These improvements will bring significant long-term benefits to road users on motorways and major A roads in the East of England, as well as to local residents and the economy asa whole.