The M4 will be closed between junctions 16 and 17 overnight on May 22 between 7pm and 10am the following day.
Traffic will be diverted in both directions as highway engineers install a new bridge at Summerlands near Chippenham.
Light vehicles will use the A429 and the B4042 between junction 16 and junction 17 via Malmesbury. Heavy vehicles will use the A3102, A4 and A350 between junction 16 and junction 17, via Calne and Chippenham.
There are also narrow lanes and a 50mph restriction east of junction 17.
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