The M11 southbound near Cambridge is set to be closed for most of Wednesday after a fatal car fire.
There's severe congestion on surrounding roads including the A14.
A car caught fire on the carriageway at around 8:30am causing a full closure of the southbound M11 and lane 2 of the northbound M11 between junction 12 for Barton and junction 11 for Trumpington and the A10.
Police say there is no indication of a collision taking place or any other vehicles being involved. One person, a man, is believed to have been in the vehicle.
Highways England is advising drivers to consider alternative routes or to delay their journey if possible. The road is likely to remain closed for most of today, possibly into the evening peak, while the vehicle is recovered and the road is repaired.
"Long distance traffic is being advised to leave the M11 at junction 14 and join the A14 eastbound to junction 35, for Stow Cum Quy, continue along the A1303 and A1304, to join the A11 southbound at Six Mile Bottom and rejoin the southbound M11 at junction 9.
"Traffic already past junction 14 on the southbound M11 can exit at junction 12 and will be diverted via the A603, A1198 and A505 to rejoin the M11 at junction 10 or take the northbound A10 at Royston to rejoin at junction 11. Local traffic is advised to avoid the area and use alternative local routes.
A man has been killed in a car fire on the M11 in Cambridgeshire.
The motorway is closed southbound at Junction 13. Police and other emergency services are currently at the scene.
Reports came in of a car on fire on the southbound carriageway of the road near junction 12, just after Barton, at about 8.10am.
Drivers are advised to avoid the area.
There is no indication at this time of a collision taking place or any other vehicles being involved. One person, a man, is believed to have been in the vehicle.
"Road users are advised to exit at J11 and take A603 westbound followed by the A1198 southbound to Royston.
Traffic should then take the A505 eastbound, remaining on the A505 eastbound to get to J10 or alternatively take the A10 northbound off onto the A505 to J11 of the M11."
There are delays on the A14 near Bury St Edmunds in Suffolk after a crash involving two lorries.
The incident happened just after 7am on the A14 eastbound at junction 41 for Risby. Congestion is reported back to junction 39 for the B1506 at Kentford.
One of the lorries hit the central reservation damaging 200 metres of safety barrier.
One lane of the A14 is closed for barrier repairs.
"The RTC resulted in closure of the A14 due one of the vehicles coming to rest straddling the central reservation. Where possible drivers are asked to avoid the area if they are able to due to the congestion caused by the road closure."
Part of the A14 near Cambridge has been closed after a horsebox caught fire. It was reported that at least one horse was on the loose.
There were long delays on one of the busiest sections of the road north of Cambridge.
The incident was between Histon and Milton and the westbound carriageway was closed near junction 32 for a time.
Balfour Beatty Carillion has been awarded what could be a £300 million contract to widen a section of the A14 in Cambridgeshire.
The company will start with pre-construction work between Swavesey and Milton worth nearly half a million pounds.
It's part of the government's £1.5 billion "Road Investment Strategy" to upgrade the A14, which is a notorious bottleneck on the road from the Suffolk coast to the Midlands.
This is the third contract to be awarded on the road project. In June Highways England appointed two joint venture contractors – one to design the improvement; the second to construct two sections of the scheme.
Campaigners are calling for the speed limit on the A14 to be lowered to 50 miles an hour.
It comes a week after there was widespread disruption on the road following a collision involving two lorries and a car.
The current speed limit is 70 miles and hour.
Overnight roadworks start again tonight along the A14 in Cambridgeshire.
The section between Histon and Girton will be closed from 8pm tonight until 6am tomorrow morning.
It will mean diversions around junction 32.
A major government announcement is expected in the next hour on a multi million pound scheme to upgrade parts of the A14. The road runs from the Port of Felixstowe to the M1 in the Midlands and is used by thousands of drivers every day.
Ministers hope the new investment will improve journey times and reduce delays.
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.