PART of the M4 will be closed in both directions over the weekend while a bridge is being demolished.

The stretch between junctions 8 and 9 for Maidenhead and junction 6 for Slough and Windsor will be shut from 8pm tonight until 6am on Monday while work is carried out to knock down Huntercombe Spur bridge.

Motorway traffic will be diverted via the A308M, A308, A332 and the A355 and there will be clearly signed diversions in place, but delays are expected.

The work is part of a project to convert the M4 between junctions 3 and 12 to a smart motorway with more lanes.

This will require a new, wider bridge over junction 7 to be built at a later date.

A temporary Huntercombe Spur bridge was installed and this will be in place while the new bridge is being built to keep the junction operating while the M4 is upgraded.