WORK to remove a gantry over the M25 will result in an overnight closure on Saturday (September 11).

WORK to remove a gantry over the M25 will result in an overnight closure on Saturday.

The anti-clockwise carriageway between junctions 22 for London Colney and 21a for Bricket Wood will be closed from 11pm until 6am on Sunday morning and a diversion route will be in place.

It formes part of the Highway Agency’s project to widen the motorway between junctions 16 and 23 from three lanes to four before the Olympics in 2012. Work started in May 2009 and the stretch between junctions 16 and 18 is already complete.

Residents in the area of the diversion route – which will take drivers along the A1081, the A414 and the A405 – are being advised to expect extra traffic during the closure.

Highways Agency project manager John Martin said: “Removing the gantries at night keeps delays for road users to a minimum. The work is part of an overall project to increase the number of lanes on the M25, improving traffic flows to ensure reliability in journey times and safety for road users.”