Suffolk businesses are being held back because of delays on the A14, according to the county's Chamber of Commerce.
It claims firms who use the road are at an immediate disadvantage because frequent delays mean higher fuel costs.
Another series of overnight closures begins on the A14 tonight.
From 8pm this evening, to 6am tomorrow the road will be completely closed westbound between junctions 32 and 36. It will also be fully shut eastbound between junctions 31 and 32. Diversions will be in place.
Work is already ongoing on the A14 for the Girton to Histon Pinchpoint programme. A national programme, it involves making improvements to busy points all around the country's road network. The aim is to stimulate growth in the local economy, relieve congestion and improve road safety.
A driver has been arrested after being filmed spinning across a dual-carriageway before smashing into the central reservation and the verge.Read the full story ›
Transport Minister John Hayes is due to visit sections of the A14 later to see how different projects are progressing.
One of his focuses will be the £16 million scheme to increase capacity and alleviate congestion between Giron and Histon just north of Cambridge.
There 10 miles of queues on the A14 in Cambridgeshire after an accident at 5.50am this morning, between a lorry and two cars. One car has crashed into the central reservation.
The accident happened at J30 Oakington and Dry Drayton. Traffic is now backed up to J24 at Godmanchester the A1198 and B1044.
Lanes 2 and 3 are closed while emergency services deal with the accident.
There are also reports of westbound traffic slowing down to look at the accident, causing some delays there too.
There are around 8 miles of queues on the A14 eastbound heading towards Cambridge this morning after an accident just before 6.00am.
It happened near Junction 30 at Oakington and Dry Drayton and there are currently delays back to Junction 25 Hemingford Abbotts. Lanes 2 and 3 are closed.
Cambridgeshire police say that westbound is also slow because people are slowing down to look at the accident.
Newly created crash cushions are being installed alongside the A14 in Cambridgeshire in a bid to protect workers widening the road.Read the full story ›
Councillors will meet today to discuss the proposals for improving the A14 through Cambridgeshire.
The A14 improvement scheme will be on the agenda of the Environment Scrutiny Committee.
Councillors are expected to recommend to approve an interim response to the Highways Agency's consultation, that gives support in principle to the scheme.
It will also ask for more details on the impact of the project to the city of Cambridge.
The A14 scheme is due to be submitted to the Government for consideration in October this year.
The A14 northbound in Cambridgeshire has re-opened eight hours after a lorry overturned at just before 10am on Tuesday.
A lorry carrying clothing overturned and the northbound A14 spur between junction 23 at the Spittals interchange near Huntington and the A1(M)/A14 was closed.
The Highways Agency said it worked hard with Cambridgeshire Police to have the road cleared as quickly as possible but reported there are still delays in the area.
The A14 near Huntingdon is due to re-open at 6pm after it was closed because a lorry overturned.
The Highways Agency has been warning of long delays on the road when it closed the northbound spur between the A14 and the A1(M).
The road has been closed since 10am and traffic diverted further along the A14 and then along the A1.