Two lanes on the A14 remain closed due to flooding.
The lanes on the eastbound carriageway between junction 37 and junction 38 in Newmarket have been closed since last Tuesday.
The closures will continue today as National Highways use tankers to clear the excess water.
The organisation is warning drivers of delays as only one lane will remain open.
According to the AA Traffic Map, there is heavy traffic on the approach to the flooded area.
A spokesman for National Highways said: "Works remain ongoing at the scene to implement a repair and clear the standing water."
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