Motorists are being warned of disruption this weekend.
The westbound carriageway of the M4 will be closed this weekend between junction 10 at Wokingham and junction 11 at Reading.
The slip roads from the A329(M) onto the M4 will also be closed in both directions.
The road will be closed overnight on Saturday, December 14 and Sunday, December 15De, closing at 9pm and re-opening at 6am on both days.
The closures are in place for National Highways to carry out inspections on the safely of structures.
