Work will be carried out to replace important bridge components between junction 16 (for the M40) and junction 17 (at Maple Cross).
The work will be carried out in two phases, each using overnight carriageway closures.
It will take place from September 9-13, on the clockwise carriageway between 10pm-5.30am, with the exception of Friday, September 11 when it will take place from 11pm-6am.
It will be carried out on the anti-clockwise carriageway from September 14-17 between 10pm-5.30am
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Clearly signed diversions will be in place .
Further work to replace expansion joints on the M25 in Kent will take place later in the year.