Police are advising motorists to avoid the A127, particularly at the Rayleigh Weir, which remains flooded after Saturday's heavy rain.
Officers are working with the local authority to get the water pumped away and reopen the road as soon as possible.
Over 200 incidents of flooding were reported to police on Saturday with areas worst affected including Southend, Canvey, Maldon, Burnham, Battlesbridge and Benfleet.
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Clear skies overnight will lead to a touch of frost in places. Tomorrow starts cool but it will soon warm up with plenty more sunshine.
MK Dons chairman Pete Winkelman has been reflecting on the club's relegation back to League One.
We may have needed our winter coats for much longer this year but April in the Anglia region was only the coldest and wettest since 2012.