Drivers are still facing delays of about 30 minutes as they travel along the A14 in Cambridgeshire - but all lanes have now re-opened.
It is affecting traffic on the westbound carriageway between junctions 29 and 31.
Abellio, who run the Greater Anglia rail line, has been named Train Operator of the Year at the annual national Rail Business Awards.
Greater Anglia train operator Abellio says it's made real steps in customer service and punctuality in its first year in charge.
Greater Anglia have apologised for the delays that have disrupted services today