The following notice arrived from Highways England concerning roadworks along the A14 between junctions 33 (Milton) and 37 (Newmarket, A142). During this work, the safety barriers will be replaced, a new drainage system installed, roads studs replaced and some resurfacing carried out.
The first set of closures (between junctions 33 and 37 of the A14) for 10 nights from Monday 8 March to Friday 19 March, on weeknights only, between the hours of 9pm and 4am, subject to weather conditions.

More information can be found closer to the time here:
Highways England Travel updates