The Highways Agency said it decided to keep the Boston Manor Viaduct closed because during works it found a crack in a "sensitive location", which requires it to be kept closed until it is repaired.
Diversion on the A312 and the A4. Drivers are being advised to allow extra time for their journeys.
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Thursday afternoon's weather for the west of the region
Thursday afternoon's weather for the east of the region
Mark Love has been found guilty of the horrific attack and murder of Roy Blackman, an elderly businessman, at his home in Biddenden in Kent