UK Government

Highways Agency (London): Overnight closure of M25 junction 22-21a near London Colney for gantry removal

News   •   Sep 07, 2010 12:35 BST

M25 between junctions 22 and 21a anti-clockwise closed overnight on Saturday 11 September

As part of the work to widen the M25 between junctions 16 and 23 north-west of London from three lanes to four, the Highways Agency needs to remove gantries on the anti-clockwise carriageway.

The anti-clockwise M25 will be closed overnight between junction 22 for London Colney and 21a, where the M25 meets the M1. The work will take place between 11pm on Saturday 11 September and 6am on Sunday 12 September. A clearly signed diversion route will be in place.

Work to widen the M25 from junction 16 to 23 started in May 2009. The stretch between junction 16 and junction 18 has already been widened to four lanes and is fully open to traffic.

John Martin, Highways Agency project manager, 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.”

A diversion route will be signposted from junction 22 via the A1081, the North Orbital Road A414 (to access the M1 northbound via the M10), and the A405, to junction 21a  and access to the M1 southbound.

Residents in the area of the diversion route are advised there may be extra traffic during the closure.

Widening this section of the M25 is due to be completed before the Olympics in 2012.


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