The road from Long Wittenham to Clifton Hampden is to be closed for up to three nights between the 21 and 25 April 2016 to enable BT to carry out overhead cabling works.
The road closures will start at 9pm in the evening and last through to 6am the next morning.
Access will be maintained for emergency service vehicles and those residents within the closure area, subject to the progress of the works.
Traffic to and from Clifton Hampden will be diverted via Appleford and Culham whilst the road is closed. More details of the closure and the diversion routes can be found here.