The A14 eastbound is partially closed following a three-lorry collision this afternoon (October 10).
The incident happened around 12.28pm near J27 Huntingdon Road to J28 Bucking Way Road (Cambridge Services / Boxworth).
Lane one of two is closed, according to traffic reporting service Inrix.
Cambridgeshire police say to "expect delays".
Injuries are not known at this stage.
Highways England says traffic has been held in order for emergency services to carry out work at scene.
There are 4.1 miles of building congestion.
We will bring you more details on this breaking news story as they emerge.
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