Drivers are being advised to find alternative route due to the flooding on the eastbound A14 near Newmarket.
National Highways has been working at the scene on the A14 Eastbound between junction 37 (Newmarket) and junction 38 (Red Lodge) since last week.
A spokesperson said: "The team is making every effort to clear the flooding causing by an excessive ground water level.
"As of Monday, the team has estimated the extraction of over eight million litres of water, roughly equivalent to almost three Olympic-size swimming pools.
"Throughout the weekend, additional millions of litres have been successfully removed.
"The team is assessing potential damages to the carriageway caused by the flooding and exploring the possibility of installing a contraflow to maintain smooth traffic flow.
Lane 1 of 2 remains closed and work continues to reduce levels of the balancing ponds (via pumping).
Martin Fellows, regional director of National Highways, said: “We apologise for the inconvenience caused to driver and local communities.
“The team is making every effort to remove the standing water in all lanes. This flooding issue is now a regional priority, and we are seeking assistance from all parties.”
With the source of the flooding believed to be from high water levels in the area, it could be some time before the water recedes and National Highways is urging drivers to avoid the area if possible.
A spokesperson for the Environment Agency said: “We are currently working with partners at National Highways around the flooding issues on the A14 at Newmarket.
“Following the exceptional rainfall in the area over the last few months, the ground is very saturated and groundwater levels are high.
“We currently have a groundwater flood alert in force for areas of Newmarket."
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